“20-20” Quantitative Aptitude | Crack SBI PO Prelims 2018 Day-136
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“20-20” Aptitude Questions | Crack SBI PO Prelims 2018 Day-136
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Review
Question 1 of 20
1. Question
Directions (Q. 1 – 5): What value should come in the place of question mark (?) in the following questions?
? % of 10370 = 35 % of 4140 + 625
Correct
Directions (Q. 1 – 5):
Answer d
(x/100)* 10370 = (35/100)*4140 + 625
(x/100)* 10370= 1449 + 625
(x/100)* 10370= 2074
X = 2074*(100/10370)
X = 20
Incorrect
Directions (Q. 1 – 5):
Answer d
(x/100)* 10370 = (35/100)*4140 + 625
(x/100)* 10370= 1449 + 625
(x/100)* 10370= 2074
X = 2074*(100/10370)
X = 20
Question 2 of 20
2. Question
Directions (Q. 1 – 5): What value should come in the place of question mark (?) in the following questions?
20 % of ? – 2380 ÷ 17 = 68
Correct
Answer c
(20/100)*x – (2380/17) = 68
(x/5) – 140 = 68
(x/5) = 208
X = 208*5 = 1040
Incorrect
Answer c
(20/100)*x – (2380/17) = 68
(x/5) – 140 = 68
(x/5) = 208
X = 208*5 = 1040
Question 3 of 20
3. Question
Directions (Q. 1 – 5): What value should come in the place of question mark (?) in the following questions?
√8281 ÷ 7 = ? – 3450 ÷ 23
Correct
Answer a
(91/7) = x – (3450/23)
13 = x – 150
X = 13 + 150
X = 163
Incorrect
Answer a
(91/7) = x – (3450/23)
13 = x – 150
X = 13 + 150
X = 163
Question 4 of 20
4. Question
Directions (Q. 1 – 5): What value should come in the place of question mark (?) in the following questions?
(5/54) of (63/125) of 450 = 35 – ?
Correct
Answer d
(5/54)*(63/125)*450 = 35 – x
21 = 35 – x
X = 35 – 21 = 14
Incorrect
Answer d
(5/54)*(63/125)*450 = 35 – x
21 = 35 – x
X = 35 – 21 = 14
Question 5 of 20
5. Question
Directions (Q. 1 – 5): What value should come in the place of question mark (?) in the following questions?
52 % of 450 + (5/9) of 7560 =?
Correct
Answer b
(52/100)*450 + (5/9)*7560 = x
234 + 4200 = x
X = 4434
Incorrect
Answer b
(52/100)*450 + (5/9)*7560 = x
234 + 4200 = x
X = 4434
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?
21, 82, 406, 2430, ?
Correct
Directions (Q. 6 – 10):
Answer a
The pattern is, *4 – 2, *5 – 4, *6 – 6, *7 – 8,..
The answer is, 17002
Incorrect
Directions (Q. 6 – 10):
Answer a
The pattern is, *4 – 2, *5 – 4, *6 – 6, *7 – 8,..
The answer is, 17002
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?
57, 28, 29, 42, 86, 212.5,?
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, 640.5
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, 640.5
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?
14, 17, 74, 675, ?
Correct
Answer b
The pattern is, *1^{2} + 3, *2^{2} + 6, *3^{2} + 9, *4^{2} + 12,..
The answer is, 10812
Incorrect
Answer b
The pattern is, *1^{2} + 3, *2^{2} + 6, *3^{2} + 9, *4^{2} + 12,..
The answer is, 10812
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?
78, 39, 39, 78, 312, ? , 39936
Correct
Answer e
The pattern is, *1/2, *1, *2, *4, *8, *16,…
The answer is, 2496
Incorrect
Answer e
The pattern is, *1/2, *1, *2, *4, *8, *16,…
The answer is, 2496
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?
26, 14, 22, 71, 348, ?
Correct
Answer d
The pattern is, *0.5 + 1^{3}, *1 + 2^{3}, *2 + 3^{3}, *4 +4^{3}, *8 + 5^{3},..
The answer is, 2909
Incorrect
Answer d
The pattern is, *0.5 + 1^{3}, *1 + 2^{3}, *2 + 3^{3}, *4 +4^{3}, *8 + 5^{3},..
The answer is, 2909
Question 11 of 20
11. Question
Difference between CI and SI on a certain amount at 10% per annum for three years is Rs. 930. Find the sum?
Correct
Answer c
Difference between CI and SI for three years is,
Diff = P (r/100)^{2} x (300 + r)/100
=> 930 = P (10/100)^{2} x (310/100)
= > 930 = P (1/100) x (31/10)
=> P = 930*(1000)/31 = Rs. 30000
Incorrect
Answer c
Difference between CI and SI for three years is,
Diff = P (r/100)^{2} x (300 + r)/100
=> 930 = P (10/100)^{2} x (310/100)
= > 930 = P (1/100) x (31/10)
=> P = 930*(1000)/31 = Rs. 30000
Question 12 of 20
12. Question
The average age of 10 players of a cricket team is 30 years. If the age of a captain is added, then the average raised by one year. Find the age of the captain?
Correct
Answer b
Total age of 10 players = 30*10 = 300
Total age of 10 players and the captain = 31*11 = 341
The age of the captain = 341 – 300 = 41 years
Shortcut:
N average
10 30
11 31
The age of the captain = 10 + 31 = 41 years
Incorrect
Answer b
Total age of 10 players = 30*10 = 300
Total age of 10 players and the captain = 31*11 = 341
The age of the captain = 341 – 300 = 41 years
Shortcut:
N average
10 30
11 31
The age of the captain = 10 + 31 = 41 years
Question 13 of 20
13. Question
A circle having a radius of 14 cm and a square having a side of 15 cm. Find the sum of the area of circle and square?
Correct
Answer c
Radius of a circle(r) = 14 cm
Area of a circle = πr^{2} = (22/7)*14*14 = 616 Sq cm
Side of a square = 15 cm
Area of a square = a^{2} = 15^{2} = 225 Sq cm
Required sum = 616 + 225 = 841 Sq cm
Incorrect
Answer c
Radius of a circle(r) = 14 cm
Area of a circle = πr^{2} = (22/7)*14*14 = 616 Sq cm
Side of a square = 15 cm
Area of a square = a^{2} = 15^{2} = 225 Sq cm
Required sum = 616 + 225 = 841 Sq cm
Question 14 of 20
14. Question
A started a business by investing Rs. 25000. After 8 months, B invested Rs. 35000 but A left. If the annual profit of A is Rs. 30000, then find the total profit?
Correct
Answer a
The share of A and B
= > [25000*8]: [35000*4]
= > 10: 7
10’s = 30000
1’s = 3000
Total profit = 17’s = Rs. 51000
Incorrect
Answer a
The share of A and B
= > [25000*8]: [35000*4]
= > 10: 7
10’s = 30000
1’s = 3000
Total profit = 17’s = Rs. 51000
Question 15 of 20
15. Question
A bus covers the first 27 Km in 25 mins and the remaining 75 Km in one hour. Find the average speed of the bus?
Correct
Answer d
Average speed = Total distance ÷ Total time
Total time = (25/60) + 1 = (17/12) hours
Total distance = 27 + 75 = 102 km
Average speed = 102/(17/12)
= > 72 km/hr
Incorrect
Answer d
Average speed = Total distance ÷ Total time
Total time = (25/60) + 1 = (17/12) hours
Total distance = 27 + 75 = 102 km
Average speed = 102/(17/12)
= > 72 km/hr
Question 16 of 20
16. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total population in 5 different cities and the percentage of population below poverty line and the ratio of male and female in the total population.
City
Total population
(In lakhs)
% of below poverty line
Male : Female
A
75
36 %
3 : 2
B
40
42 %
5 : 3
C
30
44 %
2 : 3
D
60
26 %
1 : 1
E
55
30 %
5 : 6
Find the difference between the population of above poverty line of City B to that of city D?
Correct
Directions (Q. 16 – 20)
Answer b
The population of above poverty line of City B
= > 40*(58/100) = 23.2 lakhs
The population of above poverty line of City D
= > 60*(74/100) = 44.4 lakhs
Required difference = 44.4 – 23.2 = 21.2 lakhs
Incorrect
Directions (Q. 16 – 20)
Answer b
The population of above poverty line of City B
= > 40*(58/100) = 23.2 lakhs
The population of above poverty line of City D
= > 60*(74/100) = 44.4 lakhs
Required difference = 44.4 – 23.2 = 21.2 lakhs
Question 17 of 20
17. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total population in 5 different cities and the percentage of population below poverty line and the ratio of male and female in the total population.
City
Total population
(In lakhs)
% of below poverty line
Male : Female
A
75
36 %
3 : 2
B
40
42 %
5 : 3
C
30
44 %
2 : 3
D
60
26 %
1 : 1
E
55
30 %
5 : 6
Total population of city A and E together is what percentage more than the total population of city B and D together?
Correct
Answer c
Total population of city A and E together
= > 75 + 55 = 130 lakhs
Total population of city B and D together
= > 40 + 60 = 100 lakhs
Required % = [(130 – 100)/100]*100 = 30 %
Incorrect
Answer c
Total population of city A and E together
= > 75 + 55 = 130 lakhs
Total population of city B and D together
= > 40 + 60 = 100 lakhs
Required % = [(130 – 100)/100]*100 = 30 %
Question 18 of 20
18. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total population in 5 different cities and the percentage of population below poverty line and the ratio of male and female in the total population.
City
Total population
(In lakhs)
% of below poverty line
Male : Female
A
75
36 %
3 : 2
B
40
42 %
5 : 3
C
30
44 %
2 : 3
D
60
26 %
1 : 1
E
55
30 %
5 : 6
Find the ratio between the total male population in city B and C together to that of total female population in city A and C together?
Correct
Answer a
The total male population in city B and C together
= > 40*(5/8) + 30*(2/5)
= > 25 + 12 = 37 lakhs
The total female population in city A and C together
= > 75*(2/5) + 30*(3/5)
= > 30 + 18 = 48 lakhs
Required ratio = 37: 48
Incorrect
Answer a
The total male population in city B and C together
= > 40*(5/8) + 30*(2/5)
= > 25 + 12 = 37 lakhs
The total female population in city A and C together
= > 75*(2/5) + 30*(3/5)
= > 30 + 18 = 48 lakhs
Required ratio = 37: 48
Question 19 of 20
19. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total population in 5 different cities and the percentage of population below poverty line and the ratio of male and female in the total population.
City
Total population
(In lakhs)
% of below poverty line
Male : Female
A
75
36 %
3 : 2
B
40
42 %
5 : 3
C
30
44 %
2 : 3
D
60
26 %
1 : 1
E
55
30 %
5 : 6
Find the average number of female population in city A, B and E together?
Correct
Answer d
The total number of female population in city A, B and E together
= > 75*(2/5) + 40*(3/8) + 55*(6/11)
= > 30 + 15 + 30 = 75
Required average = 75/3 = 25
Incorrect
Answer d
The total number of female population in city A, B and E together
= > 75*(2/5) + 40*(3/8) + 55*(6/11)
= > 30 + 15 + 30 = 75
Required average = 75/3 = 25
Question 20 of 20
20. Question
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total population in 5 different cities and the percentage of population below poverty line and the ratio of male and female in the total population.
City
Total population
(In lakhs)
% of below poverty line
Male : Female
A
75
36 %
3 : 2
B
40
42 %
5 : 3
C
30
44 %
2 : 3
D
60
26 %
1 : 1
E
55
30 %
5 : 6
Find the sum of the total population of below poverty line in city D and E together?
Correct
Answer a
The sum of the total population of below poverty line in city D and E together
= > 60*(26/100) + 55*(30/100)
= > 15.6 + 16.5 = 32.1 lakhs
Incorrect
Answer a
The sum of the total population of below poverty line in city D and E together
= > 60*(26/100) + 55*(30/100)
= > 15.6 + 16.5 = 32.1 lakhs
Click “Start Quiz” to attend these Questions and view Solutions
Directions (Q. 1 – 5): What value should come in the place of question mark (?) in the following questions?
? % of 10370 = 35 % of 4140 + 625
35
75
50
20
None of these
20 % of ? – 2380 ÷ 17 = 68
1520
1680
1040
1450
None of these
√8281 ÷ 7 = ? – 3450 ÷ 23
163
175
142
121
None of these
(5/54) of (63/125) of 450 = 35 – ?
21
28
35
14
None of these
52 % of 450 + (5/9) of 7560 =?
5126
4434
4892
5578
None of these
Directions (Q. 6 – 10): What value should come in the place of question mark (?) in the following number series?
21, 82, 406, 2430, ?
17002
25638
22564
15436
17250
57, 28, 29, 42, 86, 212.5,?
815.75
750.25
640.5
700.25
525
14, 17, 74, 675, ?
8125
10812
9568
12453
14250
78, 39, 39, 78, 312, ? , 39936
1254
1578
2962
2690
2496
26, 14, 22, 71, 348, ?
2748
2537
3263
2909
3125
Difference between CI and SI on a certain amount at 10% per annum for three years is Rs. 930. Find the sum?
24000
32000
30000
28000
None of these
The average age of 10 players of a cricket team is 30 years. If the age of a captain is added, then the average raised by one year. Find the age of the captain?
38 years
41 years
43 years
45 years
None of these
A circle having a radius of 14 cm and a square having a side of 15 cm. Find the sum of the area of circle and square?
658 Sq cm
925 Sq cm
841 Sq cm
726 Sq cm
None of these
A started a business by investing Rs. 25000. After 8 months, B invested Rs. 35000 but A left. If the annual profit of A is Rs. 30000, then find the total profit?
51000
46000
42000
53000
None of these
A bus covers the first 27 Km in 25 mins and the remaining 75 Km in one hour. Find the average speed of the bus?
64 km/hr
58 km/hr
76 km/hr
72 km/hr
None of these
Directions (Q. 16 – 20) Study the following information carefully and answer the given questions:
Following table shows the total population in 5 different cities and the percentage of population below poverty line and the ratio of male and female in the total population.
City
Total population
(In lakhs)
% of below poverty line
Male : Female
A
75
36 %
3 : 2
B
40
42 %
5 : 3
C
30
44 %
2 : 3
D
60
26 %
1 : 1
E
55
30 %
5 : 6
Find the difference between the population of above poverty line of City B to that of city D?
8 lakhs
2 lakhs
4 lakhs
6 lakhs
None of these
Total population of city A and E together is what percentage more than the total population of city B and D together?
40 %
55 %
30 %
60 %
None of these
Find the ratio between the total male population in city B and C together to that of total female population in city A and C together?
37 : 48
42 : 53
29 : 35
41 : 49
None of these
Find the average number of female population in city A, B and E together?
40
30
15
25
None of these
Find the sum of the total population of below poverty line in city D and E together?
1 lakhs
8 lakhs
5 lakhs
3 lakhs
None of these
Answers:
Directions (Q. 1 – 5):
1.Answer d
(x/100)* 10370 = (35/100)*4140 + 625
(x/100)* 10370= 1449 + 625
(x/100)* 10370= 2074
X = 2074*(100/10370)
X = 20
2.Answer c
(20/100)*x – (2380/17) = 68
(x/5) – 140 = 68
(x/5) = 208
X = 208*5 = 1040
3.Answer a
(91/7) = x – (3450/23)
13 = x – 150
X = 13 + 150
X = 163
4.Answer d
(5/54)*(63/125)*450 = 35 – x
21 = 35 – x
X = 35 – 21 = 14
5.Answer b
(52/100)*450 + (5/9)*7560 = x
234 + 4200 = x
X = 4434
Directions (Q. 6 – 10):
6.Answer a
The pattern is, *4 – 2, *5 – 4, *6 – 6, *7 – 8,..
The answer is, 17002
7.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, 640.5
8.Answer b
The pattern is, *1^{2} + 3, *2^{2} + 6, *3^{2} + 9, *4^{2} + 12,..
The answer is, 10812
9.Answer e
The pattern is, *1/2, *1, *2, *4, *8, *16,…
The answer is, 2496
10.Answer d
The pattern is, *0.5 + 1^{3}, *1 + 2^{3}, *2 + 3^{3}, *4 +4^{3}, *8 + 5^{3},..
The answer is, 2909
11.Answer c
Difference between CI and SI for three years is,
Diff = P (r/100)^{2} x (300 + r)/100
=> 930 = P (10/100)^{2} x (310/100)
= > 930 = P (1/100) x (31/10)
=> P = 930*(1000)/31 = Rs. 30000
12.Answer b
Total age of 10 players = 30*10 = 300
Total age of 10 players and the captain = 31*11 = 341
The age of the captain = 341 – 300 = 41 years
Shortcut:
N average
10 30
11 31
The age of the captain = 10 + 31 = 41 years
13.Answer c
Radius of a circle(r) = 14 cm
Area of a circle = πr^{2} = (22/7)*14*14 = 616 Sq cm
Side of a square = 15 cm
Area of a square = a^{2} = 15^{2} = 225 Sq cm
Required sum = 616 + 225 = 841 Sq cm
14.Answer a
The share of A and B
= > [25000*8]: [35000*4]
= > 10: 7
10’s = 30000
1’s = 3000
Total profit = 17’s = Rs. 51000
15.Answer d
Average speed = Total distance ÷ Total time
Total time = (25/60) + 1 = (17/12) hours
Total distance = 27 + 75 = 102 km
Average speed = 102/(17/12)
= > 72 km/hr
Directions (Q. 16 – 20)
16.Answer b
The population of above poverty line of City B
= > 40*(58/100) = 23.2 lakhs
The population of above poverty line of City D
= > 60*(74/100) = 44.4 lakhs
Required difference = 44.4 – 23.2 = 21.2 lakhs
17.Answer c
Total population of city A and E together
= > 75 + 55 = 130 lakhs
Total population of city B and D together
= > 40 + 60 = 100 lakhs
Required % = [(130 – 100)/100]*100 = 30 %
18.Answer a
The total male population in city B and C together
= > 40*(5/8) + 30*(2/5)
= > 25 + 12 = 37 lakhs
The total female population in city A and C together
= > 75*(2/5) + 30*(3/5)
= > 30 + 18 = 48 lakhs
Required ratio = 37: 48
19.Answer d
The total number of female population in city A, B and E together
= > 75*(2/5) + 40*(3/8) + 55*(6/11)
= > 30 + 15 + 30 = 75
Required average = 75/3 = 25
20.Answer a
The sum of the total population of below poverty line in city D and E together