“20-20” Quantitative Aptitude | Crack SBI PO Prelims 2018 Day-139
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Directions (Q. 6 – 10): What approximate value should come in the place of question mark (?) in the following questions?
16 % of 799 – (4/7) of (?) = 15
Correct
Directions (Q. 6 – 10):
Answer e
(16/100)*800 – (4/7)*x = 15
128 -15 = (4x/7)
113 = (4x/7)
(113*7)/4 = x
X = 196 = 200
Incorrect
Directions (Q. 6 – 10):
Answer e
(16/100)*800 – (4/7)*x = 15
128 -15 = (4x/7)
113 = (4x/7)
(113*7)/4 = x
X = 196 = 200
Question 7 of 20
7. Question
Directions (Q. 6 – 10): What approximate value should come in the place of question mark (?) in the following questions?
(15/8) * (160/259) × 517 =? – 3^{3}
Correct
Answer a
(15/8)*(160/260) × 520 = x – 27
600 + 27 = x
X = 627 = 630
Incorrect
Answer a
(15/8)*(160/260) × 520 = x – 27
600 + 27 = x
X = 627 = 630
Question 8 of 20
8. Question
Directions (Q. 6 – 10): What approximate value should come in the place of question mark (?) in the following questions?
(7/11) of 20349 – 18 % of 1399 =?
Correct
Answer d
(7/11)*20350 – (18/100)*1400 = x
12950 – 252 = x
X = 12698 = 12700
Incorrect
Answer d
(7/11)*20350 – (18/100)*1400 = x
12950 – 252 = x
X = 12698 = 12700
Question 9 of 20
9. Question
Directions (Q. 6 – 10): What approximate value should come in the place of question mark (?) in the following questions?
? + 125.2 – (258 ÷ 3 × 14) = 18
Correct
Answer b
X + 125 – (258*14)/3 = 18
X + 125 – 1204 = 18
X = 18 – 125 + 1204
X = 1097 = 1100
Incorrect
Answer b
X + 125 – (258*14)/3 = 18
X + 125 – 1204 = 18
X = 18 – 125 + 1204
X = 1097 = 1100
Question 10 of 20
10. Question
Directions (Q. 6 – 10): What approximate value should come in the place of question mark (?) in the following questions?
(26.01)^{2} ÷ 12.91 =? – 17 % of 2499
Correct
Answer c
(26)^{2} ÷ 13 = x – (17/100)*2500
(26*26)/13 = x – 425
52 + 425 = x
X = 477 = 480
Incorrect
Answer c
(26)^{2} ÷ 13 = x – (17/100)*2500
(26*26)/13 = x – 425
52 + 425 = x
X = 477 = 480
Question 11 of 20
11. Question
P, Q and R started business by investing in the ratio of 6: 4: 5. After 4 months, P invested 25 % more than the initial investment and R withdraw one- fourth of the initial investment. Find the total profit at the end of the year, if the share of Q is Rs. 24000?
The present age of A is 2 times the age of B, 6 years ago. C is 8 years elder than B and 7 years younger than A. Find the present age of B?
Correct
Answer a
The ratio of present age of A and B’s age 6 years ago = 2: 1
The present age of A and B = 2x, x + 6
C = B + 8
C = A – 7
B + 8 = A – 7
X + 6 + 8 = 2x – 7
X + 14 = 2x – 7
X = 21
Present age of B = x + 6 = 27 years
Incorrect
Answer a
The ratio of present age of A and B’s age 6 years ago = 2: 1
The present age of A and B = 2x, x + 6
C = B + 8
C = A – 7
B + 8 = A – 7
X + 6 + 8 = 2x – 7
X + 14 = 2x – 7
X = 21
Present age of B = x + 6 = 27 years
Question 14 of 20
14. Question
P, Q and R can complete a work in 9 days, 12 days and 15 days respectively. All together start the work and after 3 days P left the job. Then find the number of days taken to complete the remaining work?
Correct
Answer b
(P + Q + R)’s one day work = (1/9) + (1/12) + (1/15)
= > (20 + 15 + 12)/180
= > 47/180
(P + Q + R)’s 3 day work = (47/180)*3 = 47/60
Remaining work = 1-(47/60) = 13/60
(Q + R)’s one day work = (1/12) + (1/15) = (15 + 12)/(12*15) = 9/60
Q and R can complete the work in 60/9 days
The remaining work will be completed by Q and R in,
= > (13/60)*(60/9) = 13/9 = 1 4/9 days
Incorrect
Answer b
(P + Q + R)’s one day work = (1/9) + (1/12) + (1/15)
= > (20 + 15 + 12)/180
= > 47/180
(P + Q + R)’s 3 day work = (47/180)*3 = 47/60
Remaining work = 1-(47/60) = 13/60
(Q + R)’s one day work = (1/12) + (1/15) = (15 + 12)/(12*15) = 9/60
Q and R can complete the work in 60/9 days
The remaining work will be completed by Q and R in,
= > (13/60)*(60/9) = 13/9 = 1 4/9 days
Question 15 of 20
15. Question
Find the area of equilateral triangle, if the side of the equilateral triangle is 8 m?
Correct
Answer d
Area of equilateral triangle = (√3/4)*a^{2}
= > (√3/4)*8*8
= > 16√3 Sq m
Incorrect
Answer d
Area of equilateral triangle = (√3/4)*a^{2}
= > (√3/4)*8*8
= > 16√3 Sq m
Question 16 of 20
16. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following bar graph shows the total quantity of sale of wheat (In Quintal) of 6 different shops and the table shows the price per kg of wheat.
Note: 1 Quintal = 100 kg
Total amount earned = Total Quantity of Wheat sold * Price per kg
Total Quantity of Wheat sold by the shop A and C together is approximately what percentage of total quantity of Wheat sold by the shop B and D together?
Correct
Directions (Q. 16 – 20)
Answer d
Total Quantity of Wheat sold by the shop A and C together
= > 5.5 + 3 = 8.5 quintal
Total quantity of Wheat sold by the shop B and D together
= > 8 + 4 = 12 quintal
Required % = (8.5/12)*100 = 70 %
Incorrect
Directions (Q. 16 – 20)
Answer d
Total Quantity of Wheat sold by the shop A and C together
= > 5.5 + 3 = 8.5 quintal
Total quantity of Wheat sold by the shop B and D together
= > 8 + 4 = 12 quintal
Required % = (8.5/12)*100 = 70 %
Question 17 of 20
17. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following bar graph shows the total quantity of sale of wheat (In Quintal) of 6 different shops and the table shows the price per kg of wheat.
Note: 1 Quintal = 100 kg
Total amount earned = Total Quantity of Wheat sold * Price per kg
Find the ratio between the total amount earned by shop B to that of shop E?
Correct
Answer a
The total amount earned by shop B
= > (800*17) = 13600
The total amount earned by shop E
= > (600*16) = 9600
Required ratio = 13600: 9600 = 17: 12
Incorrect
Answer a
The total amount earned by shop B
= > (800*17) = 13600
The total amount earned by shop E
= > (600*16) = 9600
Required ratio = 13600: 9600 = 17: 12
Question 18 of 20
18. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following bar graph shows the total quantity of sale of wheat (In Quintal) of 6 different shops and the table shows the price per kg of wheat.
Note: 1 Quintal = 100 kg
Total amount earned = Total Quantity of Wheat sold * Price per kg
Find the total amount earned by shop D, E and F together?
Correct
Answer c
The total amount earned by shop D, E and F together
= > [(400*19) + (600*16) + (450*18)]
= > [7600 + 9600 + 8100]
= > 25300
Incorrect
Answer c
The total amount earned by shop D, E and F together
= > [(400*19) + (600*16) + (450*18)]
= > [7600 + 9600 + 8100]
= > 25300
Question 19 of 20
19. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following bar graph shows the total quantity of sale of wheat (In Quintal) of 6 different shops and the table shows the price per kg of wheat.
Note: 1 Quintal = 100 kg
Total amount earned = Total Quantity of Wheat sold * Price per kg
The total amount earned by shop B is approximately what percentage the total amount earned by shop C?
Correct
Answer b
The total amount earned by shop B
= > 800*17 = 13600
The total amount earned by shop C
= > 300*21 = 6300
Required % = (13600/6300)*100 = 216 %
Incorrect
Answer b
The total amount earned by shop B
= > 800*17 = 13600
The total amount earned by shop C
= > 300*21 = 6300
Required % = (13600/6300)*100 = 216 %
Question 20 of 20
20. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following bar graph shows the total quantity of sale of wheat (In Quintal) of 6 different shops and the table shows the price per kg of wheat.
Note: 1 Quintal = 100 kg
Total amount earned = Total Quantity of Wheat sold * Price per kg
Find the difference between the total quantity of wheat sold by the shop A, B and E together to that of the shop C, D and F together?
Correct
Answer d
The total quantity of wheat sold by the shop A, B and E together
= > 5.5 + 8 + 6 = 19.5 quintal
The total quantity of wheat sold by the shop C, D and F together
= > 3 + 4 + 4.5 = 11.5 quintal
Required difference = 19.5 – 11.5 = 8 quintal
Incorrect
Answer d
The total quantity of wheat sold by the shop A, B and E together
= > 5.5 + 8 + 6 = 19.5 quintal
The total quantity of wheat sold by the shop C, D and F together
= > 3 + 4 + 4.5 = 11.5 quintal
Required difference = 19.5 – 11.5 = 8 quintal
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Directions (Q. 1 – 5): What value should come in the place of question mark (?) in the following number series?
14, 18, 45, 151, 629, ?
2567
2289
2872
3181
3356
36, 51, 70, 105, 204, ?
559
628
673
512
595
18, 71, 281, 1119, ?
3278
3891
4056
4129
4469
34, 59, 252, 1385, 9870, ?
35625
48965
89055
59615
66895
1148, 2490, 3500, 4238, 4758, ?
5326
5108
5274
5572
5250
Directions (Q. 6 – 10): What approximate value should come in the place of question mark (?) in the following questions?
16 % of 799 – (4/7) of (?) = 15
250
175
150
325
200
(15/8) * (160/259) × 517 =? – 3^{3}
630
520
430
360
550
(7/11) of 20349 – 18 % of 1399 =?
12300
11500
10900
12700
13600
? + 125.2 – (258 ÷ 3 × 14) = 18
900
1100
1300
700
1500
(26.01)^{2} ÷ 12.91 =? – 17 % of 2499
360
400
480
520
550
P, Q and R started business by investing in the ratio of 6: 4: 5. After 4 months, P invested 25 % more than the initial investment and R withdraw one- fourth of the initial investment. Find the total profit at the end of the year, if the share of Q is Rs. 24000?
Rs.91600
Rs.97200
Rs.99800
Rs.91000
None of these
Find the difference between the compound interest on Rs. 32000 for 2 years at 5 % per annum compounded annually and compounded half yearly (approx)?
Rs.49
Rs.53
Rs.42
Rs.57
Rs.61
The present age of A is 2 times the age of B, 6 years ago. C is 8 years elder than B and 7 years younger than A. Find the present age of B?
27 years
32 years
25 years
30 years
None of these
P, Q and R can complete a work in 9 days, 12 days and 15 days respectively. All together start the work and after 3 days P left the job. Then find the number of days taken to complete the remaining work?
2 7/11 days
1 4/9 days
2 3/7 days
1 5/6 days
None of these
Find the area of equilateral triangle, if the side of the equilateral triangle is 8 m?
20 √3 Sq m
24 √3 Sq m
36 √3 Sq m
16 √3 Sq m
None of these
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following bar graph shows the total quantity of sale of wheat (In Quintal) of 6 different shops and the table shows the price per kg of wheat.
Note: 1 Quintal = 100 kg
Total amount earned = Total Quantity of Wheat sold * Price per kg
Total Quantity of Wheat sold by the shop A and C together is approximately what percentage of total quantity of Wheat sold by the shop B and D together?
50 %
85 %
115 %
70 %
100 %
Find the ratio between the total amount earned by shop B to that of shop E?
17 : 12
23 : 28
11 : 15
8 : 3
None of these
Find the total amount earned by shop D, E and F together?
20800
22600
25300
27500
None of these
The total amount earned by shop B is approximately what percentage the total amount earned by shop C?
170 %
216 %
160 %
195 %
230 %
Find the difference between the total quantity of wheat sold by the shop A, B and E together to that of the shop C, D and F together?
10 quintal
15 quintal
17 quintal
8 quintal
None of these
Answers:
Directions (Q. 1 – 5):
1.Answer d
The pattern is, *1 + 2^{2}, *2+3^{2}, *3+ 4^{2}, *4 + 5^{2}, *5 + 6^{2},..
The answer is, 3181
2.Answer a
The difference of difference is, 4^{1}, 4^{2}, 4^{3}, 4^{4},..
The answer is, 559
3.Answer e
The pattern is, *4 -1, *4 -3, *4 -5, *4 – 7,..
The answer is, 4469
4.Answer c
The pattern is, *1 + 25, *3 + 75, *5 + 125, *7 + 175, *9 + 225,..