Basic Maths and Reasoning MCQs (page 182 of 212)
Percentages, ratios, averages, profit and loss, speed and time, number series and simple logical reasoning, with the working shown for every answer.
4,221 questions. Select an option to check your answer, or open "Show answer". Showing 3621–3640.
- 3621.
Ali is 13 years older than Sara. The sum of their ages is 65. How old is Ali?
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Answer: C. 39
Sara = x, Ali = x + 13. 2x + 13 = 65, so x = 26 and Ali = 39.
- 3622.
Ali is 11 years older than Sara. The sum of their ages is 49. How old is Ali?
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Answer: C. 30
Sara = x, Ali = x + 11. 2x + 11 = 49, so x = 19 and Ali = 30.
- 3623.
Ali is 8 years older than Sara. The sum of their ages is 76. How old is Ali?
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Answer: C. 42
Sara = x, Ali = x + 8. 2x + 8 = 76, so x = 34 and Ali = 42.
- 3624.
Ali is 9 years older than Sara. The sum of their ages is 75. How old is Ali?
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Answer: C. 42
Sara = x, Ali = x + 9. 2x + 9 = 75, so x = 33 and Ali = 42.
- 3625.
A father is 4 times as old as his son. If the son is 19 now, how old will the father be in 12 years?
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Answer: B. 88
Father now = 4 × 19 = 76. In 12 years: 76 + 12 = 88.
- 3626.
A father is 3 times as old as his son. If the son is 12 now, how old will the father be in 12 years?
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Answer: B. 48
Father now = 3 × 12 = 36. In 12 years: 36 + 12 = 48.
- 3627.
A father is 3 times as old as his son. If the son is 15 now, how old will the father be in 4 years?
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Answer: B. 49
Father now = 3 × 15 = 45. In 4 years: 45 + 4 = 49.
- 3628.
A father is 4 times as old as his son. If the son is 5 now, how old will the father be in 11 years?
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Answer: B. 31
Father now = 4 × 5 = 20. In 11 years: 20 + 11 = 31.
- 3629.
A father is 3 times as old as his son. If the son is 15 now, how old will the father be in 8 years?
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Answer: B. 53
Father now = 3 × 15 = 45. In 8 years: 45 + 8 = 53.
- 3630.
A father is 4 times as old as his son. If the son is 20 now, how old will the father be in 9 years?
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Answer: B. 89
Father now = 4 × 20 = 80. In 9 years: 80 + 9 = 89.
- 3631.
A father is 3 times as old as his son. If the son is 5 now, how old will the father be in 10 years?
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Answer: B. 25
Father now = 3 × 5 = 15. In 10 years: 15 + 10 = 25.
- 3632.
A father is 3 times as old as his son. If the son is 5 now, how old will the father be in 12 years?
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Answer: B. 27
Father now = 3 × 5 = 15. In 12 years: 15 + 12 = 27.
- 3633.
A father is 3 times as old as his son. If the son is 4 now, how old will the father be in 10 years?
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Answer: B. 22
Father now = 3 × 4 = 12. In 10 years: 12 + 10 = 22.
- 3634.
A father is 2 times as old as his son. If the son is 7 now, how old will the father be in 6 years?
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Answer: B. 20
Father now = 2 × 7 = 14. In 6 years: 14 + 6 = 20.
- 3635.
A father is 2 times as old as his son. If the son is 10 now, how old will the father be in 4 years?
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Answer: B. 24
Father now = 2 × 10 = 20. In 4 years: 20 + 4 = 24.
- 3636.
A father is 2 times as old as his son. If the son is 18 now, how old will the father be in 4 years?
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Answer: B. 40
Father now = 2 × 18 = 36. In 4 years: 36 + 4 = 40.
- 3637.
A father is 3 times as old as his son. If the son is 5 now, how old will the father be in 8 years?
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Answer: B. 23
Father now = 3 × 5 = 15. In 8 years: 15 + 8 = 23.
- 3638.
A father is 2 times as old as his son. If the son is 14 now, how old will the father be in 4 years?
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Answer: B. 32
Father now = 2 × 14 = 28. In 4 years: 28 + 4 = 32.
- 3639.
A father is 4 times as old as his son. If the son is 10 now, how old will the father be in 5 years?
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Answer: B. 45
Father now = 4 × 10 = 40. In 5 years: 40 + 5 = 45.
- 3640.
A father is 2 times as old as his son. If the son is 9 now, how old will the father be in 11 years?
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Answer: B. 29
Father now = 2 × 9 = 18. In 11 years: 18 + 11 = 29.