IBPS PO Prelims 2021 - Quantitative Aptitude
IBPS PO Prelims 2021 - Quantitative Aptitude - Important Points
| 26. | 10 years ago, respective ratio of the age of mother and daughter was 4 : 1. 10 years later, the respective ratio of the age of mother and daughter will become 2 : 1. At present, what is the sum of their age? |
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A. 55 years
B. 65 years
C. 70 years
D. 75 years
E. 77 years
View Answer Discuss Work SpaceAnswer: option c
Explanation:
Answer:C
| 27. | The income of Aman is Rs. 30,000 per month and his expenditure is Rs. 20,000 per month. In the next month, his income increases by Rs. 10,000 per month, and expenditure increases to Rs. 25,000 per month. In the next month, his savings increases by what percent? |
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A. 55%
B. 25%
C. 100%
D. 12.5%
E. None of these
View Answer Discuss Work SpaceAnswer: option e
Explanation:
Answer:E
| 28. | There is 80% increase in an amount in 8 years at simple interest. What will be the compound interest on Rs. 15,000 after 3 years at the same rate of interest? |
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A. Rs. 4,565
B. Rs. 5,000
C. Rs. 4,550
D. Rs. 4,695
E. Rs. 4,965
View Answer Discuss Work SpaceAnswer: option e
Explanation:
Answer:E
| 29. | In a class, there are certain numbers of students. Their average age is 12 years. If two students leave the class, their ages are 23 years and 25 years respectively. Then the average age of the class becomes 11 years. Find the number of students in the class. |
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A. 25
B. 28
C. 30
D. 26
E. 35
View Answer Discuss Work SpaceAnswer: option d
Explanation:
Answer:D
| 30. | A school has 45% girls. If 80% of girls score more than 75% marks and 70% of the boys have score more than 75% marks. If a student is selected at random and is found to have more than 75% marks, find the probability of it being a boy. |
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A. 77/149
B. 75/149
C. Cannot be determined
D. 11/20
E. 9/20
View Answer Discuss Work SpaceAnswer: option a
Explanation:
Answer:A