“20-20” Quantitative Aptitude | Crack SBI PO Prelims 2018 Day-114
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“20-20” Aptitude Questions | Crack SBI PO Prelims 2018 Day-114
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Question 1 of 20
1. Question
Directions (Q. 1 – 5) what approximate value should come in the place of question mark (?) in the following questions?
26 % of 397 + 48 % of 703 – 25 % of 451 =?
Correct
Answer c
(26/100)*400 + (48/100)*700 – (25/100)*450 = x
104 + 336 – 112.5 = x
X = 327.5 = 330
Incorrect
Answer c
(26/100)*400 + (48/100)*700 – (25/100)*450 = x
104 + 336 – 112.5 = x
X = 327.5 = 330
Question 2 of 20
2. Question
Directions (Q. 1 – 5) what approximate value should come in the place of question mark (?) in the following questions?
(8/36) ÷ (216/63) × 756 – 341.67 + 67 % of 599 =?
Correct
Answer a
(8/36)*(63/216)*756 – 342 + (67/100)*600 = x
X = 49 – 342 + 402
X = 109 = 110
Incorrect
Answer a
(8/36)*(63/216)*756 – 342 + (67/100)*600 = x
X = 49 – 342 + 402
X = 109 = 110
Question 3 of 20
3. Question
Directions (Q. 1 – 5) what approximate value should come in the place of question mark (?) in the following questions?
41 % of 697 + 69 % of 804 – 35 % of 751 =?
Correct
Answer b
40 % of 700 + 70 % of 800 – 35 % of 750 = x
X = (40/100)*700 + (70/100)*800 – (35/100)*750
X = 280 + 560 – 262.5
X = 577.5 = 580
Incorrect
Answer b
40 % of 700 + 70 % of 800 – 35 % of 750 = x
X = (40/100)*700 + (70/100)*800 – (35/100)*750
X = 280 + 560 – 262.5
X = 577.5 = 580
Question 4 of 20
4. Question
Directions (Q. 1 – 5) what approximate value should come in the place of question mark (?) in the following questions?
(7/29) ÷ (392/72) × 812 – 571.67 + 78 % of 799 =?
Correct
Answer d
(7/29)*(72/392)*812 – 572 + 78 % of 800 = x
36 – 572 + (78/100)*800 = x
X = 36 – 572 + 624
X = 88
Incorrect
Answer d
(7/29)*(72/392)*812 – 572 + 78 % of 800 = x
36 – 572 + (78/100)*800 = x
X = 36 – 572 + 624
X = 88
Question 5 of 20
5. Question
Directions (Q. 1 – 5) what approximate value should come in the place of question mark (?) in the following questions?
119 % of 1799 + (3/7) of 6889 = (?) + 218.81
Correct
Answer e
120 % of 1800 + (3/7)*6888 = x + 219
(120/100)*1800 + (3/7)*6888 = x + 219
2160 + 2952 – 219 = x
X = 4893= 4890
Incorrect
Answer e
120 % of 1800 + (3/7)*6888 = x + 219
(120/100)*1800 + (3/7)*6888 = x + 219
2160 + 2952 – 219 = x
X = 4893= 4890
Question 6 of 20
6. Question
Directions (Q. 6 – 10) what value should come in the place of question mark (?) in the following number series?
53, 26, 27, 39, 80, 197.5,?
Correct
Answer c
The pattern is, *0.5 – 0.5, *1 + 1, *1.5 -1.5, *2 + 2, *2.5 – 2.5, *3 + 3….
The answer is, 595.5
Incorrect
Answer c
The pattern is, *0.5 – 0.5, *1 + 1, *1.5 -1.5, *2 + 2, *2.5 – 2.5, *3 + 3….
The answer is, 595.5
Question 7 of 20
7. Question
Directions (Q. 6 – 10) what value should come in the place of question mark (?) in the following number series?
7, 15, 63, 383, 3071,?
Correct
Answer b
The pattern is, *2 + 1, *4 + 3, * 6 + 5, *8 + 7, *10 + 9…
The answer is, 30719
Incorrect
Answer b
The pattern is, *2 + 1, *4 + 3, * 6 + 5, *8 + 7, *10 + 9…
The answer is, 30719
Question 8 of 20
8. Question
Directions (Q. 6 – 10) what value should come in the place of question mark (?) in the following number series?
84, 43, 51, 129, 580,?
Correct
Answer a
The pattern is, *0.5 + 1^{3}, *1 + 2^{3}, *2 + 3^{3}, *4 +4^{3}, *8 + 5^{3}…
The answer is, 4765
Incorrect
Answer a
The pattern is, *0.5 + 1^{3}, *1 + 2^{3}, *2 + 3^{3}, *4 +4^{3}, *8 + 5^{3}…
The answer is, 4765
Question 9 of 20
9. Question
Directions (Q. 6 – 10) what value should come in the place of question mark (?) in the following number series?
2156, 2152, 2142, 2114, 2032,?
Correct
Answer d
The pattern is, – (3^{1} +1), -(3^{2} +1), -(3^{3} +1), -(3^{4} +1), -(3^{5} +1)…
The answer is, 1788
Incorrect
Answer d
The pattern is, – (3^{1} +1), -(3^{2} +1), -(3^{3} +1), -(3^{4} +1), -(3^{5} +1)…
The answer is, 1788
Question 10 of 20
10. Question
Directions (Q. 6 – 10) what value should come in the place of question mark (?) in the following number series?
11, 13, 55, 195, 1011,?
Correct
Answer e
The pattern is, *2 – 3^{2}, *3 + 4^{2}, *4 – 5^{2}, *5 + 6^{2}, *6 – 7^{2}…
The answer is, 6017
Incorrect
Answer e
The pattern is, *2 – 3^{2}, *3 + 4^{2}, *4 – 5^{2}, *5 + 6^{2}, *6 – 7^{2}…
The answer is, 6017
Question 11 of 20
11. Question
Rahul borrowed a certain sum of money at simple interest for 3 years at 12 % per annum and he pays Rs. 5400 as interest. Find the corresponding compound interest?
Correct
Answer c
S.I = PNR/100
5400 = (P*3*12)/100
P = (5400*100)/36
P = 15000
Corresponding C.I:
15000*(12/100) = 1800
16800*(12/100) = 2016
18816 *(12/100) = 2257.92
C.I = 1800 + 2016 + 2257.92 = Rs. 6073.92
Incorrect
Answer c
S.I = PNR/100
5400 = (P*3*12)/100
P = (5400*100)/36
P = 15000
Corresponding C.I:
15000*(12/100) = 1800
16800*(12/100) = 2016
18816 *(12/100) = 2257.92
C.I = 1800 + 2016 + 2257.92 = Rs. 6073.92
Question 12 of 20
12. Question
The sum of 4 consecutive numbers is 458. What is the 75 % of highest number?
Correct
Answer a
X + x + 1 + x +2 + x + 3 = 458
4x + 6 = 458
4x = 452
X = (452/4) = 113
Highest number = 113 + 3 = 116
75 % of highest number = (75/100)*116 = 87
Incorrect
Answer a
X + x + 1 + x +2 + x + 3 = 458
4x + 6 = 458
4x = 452
X = (452/4) = 113
Highest number = 113 + 3 = 116
75 % of highest number = (75/100)*116 = 87
Question 13 of 20
13. Question
A train crosses a pole in 8 seconds and the same train crosses a bridge of length 275 m in 18 sec. Find the length of the train?
Correct
Answer d
Let the train length be x,
Here, the speed of the train is equal. So,
(x/8) = (x + 275)/18
(x/4) = (x + 275)/9
9x = 4x + 1100
5x = 1100
X = 220 m
Incorrect
Answer d
Let the train length be x,
Here, the speed of the train is equal. So,
(x/8) = (x + 275)/18
(x/4) = (x + 275)/9
9x = 4x + 1100
5x = 1100
X = 220 m
Question 14 of 20
14. Question
The average score of 52 students of a class is 70. If the first five rank students marks are removed, the average drops by 5 marks. If the first five rank student’s marks are consecutive increasing integers, then find the First mark?
Correct
Answer b
The average score of 52 students = 70
Total score of 45 students = 52*70 = 3640
If the first five rank students marks are removed, the average drops by 5 marks.
So,
The average score of 47 students = 65
Total score of 40 students = 47*65 = 3055
X+ (x+1) + (x+2) + (x+3) + (x+4) = 585
5x + 10 = 585
5x = 575
X = 115
First mark = 115+4 = 119
Incorrect
Answer b
The average score of 52 students = 70
Total score of 45 students = 52*70 = 3640
If the first five rank students marks are removed, the average drops by 5 marks.
So,
The average score of 47 students = 65
Total score of 40 students = 47*65 = 3055
X+ (x+1) + (x+2) + (x+3) + (x+4) = 585
5x + 10 = 585
5x = 575
X = 115
First mark = 115+4 = 119
Question 15 of 20
15. Question
Three pipes A, B and C can fill a tank in 12 hours. After working at it together for 3 hours, C is closed and A and B can fill the remaining part in 12 hours. How much time taken by C to fill the tank alone?
Correct
Answer c
Three pipes A, B and C can fill a tank in 12 hours.
A, B and C’s 1 hour work=1/12
A, B and C’s 3 hour work= 3/12 = 1/4
Remaining work= 1- 1/4 = 3/4
The remaining part will be filled by A and B in 6 hours. Then,
= > (3/4) *(A+B) = 12
= > (A+B)’s whole work= 16 hr
(A+B)’s 1 hour work= 1/16
A, B and C’s 1 hour work=1/12
C’s 1 hour work= (A+B+C) – (A+B)
= > (1/12) – (1/16)
= > 1/48
C can fill the tank in 48 hours.
Incorrect
Answer c
Three pipes A, B and C can fill a tank in 12 hours.
A, B and C’s 1 hour work=1/12
A, B and C’s 3 hour work= 3/12 = 1/4
Remaining work= 1- 1/4 = 3/4
The remaining part will be filled by A and B in 6 hours. Then,
= > (3/4) *(A+B) = 12
= > (A+B)’s whole work= 16 hr
(A+B)’s 1 hour work= 1/16
A, B and C’s 1 hour work=1/12
C’s 1 hour work= (A+B+C) – (A+B)
= > (1/12) – (1/16)
= > 1/48
C can fill the tank in 48 hours.
Question 16 of 20
16. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions.
Following line graph shows the runs scored by three different teams in 5 different cricket matches.
The total runs scored by India and Indonesia in Match 1 and 3 together is approximately what percentage less than the total runs scored by Australia in all the given matches together?
Correct
Answer c
The total runs scored by India and Indonesia in Match 1 and 3 together
= > 360 + 325 + 310 + 225 = 1220 runs
The total runs scored by Australia in all the given matches together
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions.
Following line graph shows the runs scored by three different teams in 5 different cricket matches.
Find the difference between the total runs scored by India to that of Australia in all the given matches together?
Correct
Answer b
The total runs scored by India in all the given matches together
= > 360 + 220 + 310 + 315 + 245 = 1450 runs
The total runs scored by Australia in all the given matches together
= > 290 + 270 + 275 + 345 + 290 = 1470 runs
Required difference =1470 – 1450 = 20 runs
Incorrect
Answer b
The total runs scored by India in all the given matches together
= > 360 + 220 + 310 + 315 + 245 = 1450 runs
The total runs scored by Australia in all the given matches together
= > 290 + 270 + 275 + 345 + 290 = 1470 runs
Required difference =1470 – 1450 = 20 runs
Question 18 of 20
18. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions.
Following line graph shows the runs scored by three different teams in 5 different cricket matches.
Find the ratio between the total runs scored by Australia in Match 1, Match 3 and Match 5 together to that of total runs scored by Indonesia in Match 2, Match 4 and Match 5 together?
Correct
Answer a
The total runs scored by Australia in Match 1, Match 3 and Match 5 together
= > 290 + 275 + 290 = 855 runs
The total runs scored by Indonesia in Match 2, Match 4 and Match 5 together
= > 240 + 370 + 265 = 875 runs
Required ratio = 855: 875 = 171: 175
Incorrect
Answer a
The total runs scored by Australia in Match 1, Match 3 and Match 5 together
= > 290 + 275 + 290 = 855 runs
The total runs scored by Indonesia in Match 2, Match 4 and Match 5 together
= > 240 + 370 + 265 = 875 runs
Required ratio = 855: 875 = 171: 175
Question 19 of 20
19. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions.
Following line graph shows the runs scored by three different teams in 5 different cricket matches.
What is the least score of the three teams for all the given matches together?
Correct
Answer d
The total runs scored by India in all the given matches together
= > 360 + 220 + 310 + 315 + 245 = 1450 runs
The total runs scored by Australia in all the given matches together
= > 290 + 270 + 275 + 345 + 290 = 1470 runs
The total runs scored by Indonesia in all the given matches together
= > 325 + 240 + 225 + 370 + 265 = 1425
Incorrect
Answer d
The total runs scored by India in all the given matches together
= > 360 + 220 + 310 + 315 + 245 = 1450 runs
The total runs scored by Australia in all the given matches together
= > 290 + 270 + 275 + 345 + 290 = 1470 runs
The total runs scored by Indonesia in all the given matches together
= > 325 + 240 + 225 + 370 + 265 = 1425
Question 20 of 20
20. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions.
Following line graph shows the runs scored by three different teams in 5 different cricket matches.
Total runs scored by India in Match 2 and Match 4 together is approximately what percentage of total runs scored by Australia in Match 1 and Match 5 together?
Correct
Answer c
Total runs scored by India in Match 2 and Match 4 together
= > 220 + 315 = 535
Total runs scored by Australia in Match 1 and Match 5 together
= > 290 + 290 = 580
Required % = (535/580)*100 = 92.24 % = 92 %
Incorrect
Answer c
Total runs scored by India in Match 2 and Match 4 together
= > 220 + 315 = 535
Total runs scored by Australia in Match 1 and Match 5 together
Click “Start Quiz” to attend these Questions and view Solutions
Directions (Q. 1 – 5) what approximate value should come in the place of question mark (?) in the following questions?
26 % of 397 + 48 % of 703 – 25 % of 451 =?
370
250
330
410
290
(8/36) ÷ (216/63) × 756 – 341.67 + 67 % of 599 =?
110
170
230
250
190
41 % of 697 + 69 % of 804 – 35 % of 751 =?
520
580
630
670
440
(7/29) ÷ (392/72) × 812 – 571.67 + 78 % of 799 =?
77
66
55
88
44
119 % of 1799 + (3/7) of 6889 = (?) + 218.81
5160
4350
5740
6320
4890
Directions (Q. 6 – 10) what value should come in the place of question mark (?) in the following number series?
53, 26, 27, 39, 80, 197.5,?
413
527
595.5
489.75
607.25
7, 15, 63, 383, 3071,?
9845
30719
24567
16783
28951
84, 43, 51, 129, 580,?
4765
2896
3178
4284
3573
2156, 2152, 2142, 2114, 2032,?
1842
1624
1856
1788
1912
11, 13, 55, 195, 1011,?
5239
3875
4653
2371
6017
Rahul borrowed a certain sum of money at simple interest for 3 years at 12 % per annum and he pays Rs. 5400 as interest. Find the corresponding compound interest?
Rs. 5991.76
Rs. 5785.24
Rs. 6073.92
Rs. 6257.45
None of these
The sum of 4 consecutive numbers is 458. What is the 75 % of highest number?
87
96
92
85
81
A train crosses a pole in 8 seconds and the same train crosses a bridge of length 275 m in 18 sec. Find the length of the train?
150 m
175 m
125 m
220 m
250 m
The average score of 52 students of a class is 70. If the first five rank students marks are removed, the average drops by 5 marks. If the first five rank student’s marks are consecutive increasing integers, then find the First mark?
121
119
108
127
None of these
Three pipes A, B and C can fill a tank in 12 hours. After working at it together for 3 hours, C is closed and A and B can fill the remaining part in 12 hours. How much time taken by C to fill the tank alone?
36 hours
32 hours
48 hours
44 hours
None of these
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions.
Following line graph shows the runs scored by three different teams in 5 different cricket matches.
The total runs scored by India and Indonesia in Match 1 and 3 together is approximately what percentage less than the total runs scored by Australia in all the given matches together?
24 %
32 %
16 %
5 %
46 %
Find the difference between the total runs scored by India to that of Australia in all the given matches together?
28 runs
20 runs
36 runs
44 runs
None of these
Find the ratio between the total runs scored by Australia in Match 1, Match 3 and Match 5 together to that of total runs scored by Indonesia in Match 2, Match 4 and Match 5 together?
171 : 175
142 : 123
124 : 117
136 : 105
None of these
What is the least score of the three teams for all the given matches together?
1365
1650
1790
1425
None of these
Total runs scored by India in Match 2 and Match 4 together is approximately what percentage of total runs scored by Australia in Match 1 and Match 5 together?
83 %
77 %
92 %
105 %
118 %
Answers:
Direction (1-5)
1). Answer c
(26/100)*400 + (48/100)*700 – (25/100)*450 = x
104 + 336 – 112.5 = x
X = 327.5 = 330
2). Answer a
(8/36)*(63/216)*756 – 342 + (67/100)*600 = x
X = 49 – 342 + 402
X = 109 = 110
3). Answer b
40 % of 700 + 70 % of 800 – 35 % of 750 = x
X = (40/100)*700 + (70/100)*800 – (35/100)*750
X = 280 + 560 – 262.5
X = 577.5 = 580
4). Answer d
(7/29)*(72/392)*812 – 572 + 78 % of 800 = x
36 – 572 + (78/100)*800 = x
X = 36 – 572 + 624
X = 88
5). Answer e
120 % of 1800 + (3/7)*6888 = x + 219
(120/100)*1800 + (3/7)*6888 = x + 219
2160 + 2952 – 219 = x
X = 4893= 4890
Direction (6-10)
6). Answer c
The pattern is, *0.5 – 0.5, *1 + 1, *1.5 -1.5, *2 + 2, *2.5 – 2.5, *3 + 3….
The answer is, 595.5
7). Answer b
The pattern is, *2 + 1, *4 + 3, * 6 + 5, *8 + 7, *10 + 9…
The answer is, 30719
8). Answer a
The pattern is, *0.5 + 1^{3}, *1 + 2^{3}, *2 + 3^{3}, *4 +4^{3}, *8 + 5^{3}…
The answer is, 4765
9). Answer d
The pattern is, – (3^{1} +1), -(3^{2} +1), -(3^{3} +1), -(3^{4} +1), -(3^{5} +1)…
The answer is, 1788
10). Answer e
The pattern is, *2 – 3^{2}, *3 + 4^{2}, *4 – 5^{2}, *5 + 6^{2}, *6 – 7^{2}…
The answer is, 6017
11). Answer c
S.I = PNR/100
5400 = (P*3*12)/100
P = (5400*100)/36
P = 15000
Corresponding C.I:
15000*(12/100) = 1800
16800*(12/100) = 2016
18816 *(12/100) = 2257.92
C.I = 1800 + 2016 + 2257.92 = Rs. 6073.92
12). Answer a
X + x + 1 + x +2 + x + 3 = 458
4x + 6 = 458
4x = 452
X = (452/4) = 113
Highest number = 113 + 3 = 116
75 % of highest number = (75/100)*116 = 87
13). Answer d
Let the train length be x,
Here, the speed of the train is equal. So,
(x/8) = (x + 275)/18
(x/4) = (x + 275)/9
9x = 4x + 1100
5x = 1100
X = 220 m
14). Answer b
The average score of 52 students = 70
Total score of 45 students = 52*70 = 3640
If the first five rank students marks are removed, the average drops by 5 marks.
So,
The average score of 47 students = 65
Total score of 40 students = 47*65 = 3055
X+ (x+1) + (x+2) + (x+3) + (x+4) = 585
5x + 10 = 585
5x = 575
X = 115
First mark = 115+4 = 119
15). Answer c
Three pipes A, B and C can fill a tank in 12 hours.
A, B and C’s 1 hour work=1/12
A, B and C’s 3 hour work= 3/12 = 1/4
Remaining work= 1- 1/4 = 3/4
The remaining part will be filled by A and B in 6 hours. Then,
= > (3/4) *(A+B) = 12
= > (A+B)’s whole work= 16 hr
(A+B)’s 1 hour work= 1/16
A, B and C’s 1 hour work=1/12
C’s 1 hour work= (A+B+C) – (A+B)
= > (1/12) – (1/16)
= > 1/48
C can fill the tank in 48 hours.
Direction (16-20)
16). Answer c
The total runs scored by India and Indonesia in Match 1 and 3 together
= > 360 + 325 + 310 + 225 = 1220 runs
The total runs scored by Australia in all the given matches together