Basic Maths and Reasoning MCQs (page 179 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 3561–3580.
- 3561.
Ali is 7 years older than Sara. The sum of their ages is 39. How old is Ali?
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Answer: C. 23
Sara = x, Ali = x + 7. 2x + 7 = 39, so x = 16 and Ali = 23.
- 3562.
Ali is 2 years older than Sara. The sum of their ages is 36. How old is Ali?
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Answer: C. 19
Sara = x, Ali = x + 2. 2x + 2 = 36, so x = 17 and Ali = 19.
- 3563.
Ali is 12 years older than Sara. The sum of their ages is 62. How old is Ali?
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Answer: C. 37
Sara = x, Ali = x + 12. 2x + 12 = 62, so x = 25 and Ali = 37.
- 3564.
Ali is 3 years older than Sara. The sum of their ages is 69. How old is Ali?
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Answer: C. 36
Sara = x, Ali = x + 3. 2x + 3 = 69, so x = 33 and Ali = 36.
- 3565.
Ali is 3 years older than Sara. The sum of their ages is 51. How old is Ali?
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Answer: C. 27
Sara = x, Ali = x + 3. 2x + 3 = 51, so x = 24 and Ali = 27.
- 3566.
Ali is 3 years older than Sara. The sum of their ages is 21. How old is Ali?
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Answer: C. 12
Sara = x, Ali = x + 3. 2x + 3 = 21, so x = 9 and Ali = 12.
- 3567.
Ali is 3 years older than Sara. The sum of their ages is 35. How old is Ali?
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Answer: C. 19
Sara = x, Ali = x + 3. 2x + 3 = 35, so x = 16 and Ali = 19.
- 3568.
Ali is 11 years older than Sara. The sum of their ages is 43. How old is Ali?
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Answer: C. 27
Sara = x, Ali = x + 11. 2x + 11 = 43, so x = 16 and Ali = 27.
- 3569.
Ali is 10 years older than Sara. The sum of their ages is 32. How old is Ali?
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Answer: C. 21
Sara = x, Ali = x + 10. 2x + 10 = 32, so x = 11 and Ali = 21.
- 3570.
Ali is 6 years older than Sara. The sum of their ages is 40. How old is Ali?
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Answer: C. 23
Sara = x, Ali = x + 6. 2x + 6 = 40, so x = 17 and Ali = 23.
- 3571.
Ali is 12 years older than Sara. The sum of their ages is 70. How old is Ali?
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Answer: C. 41
Sara = x, Ali = x + 12. 2x + 12 = 70, so x = 29 and Ali = 41.
- 3572.
Ali is 3 years older than Sara. The sum of their ages is 79. How old is Ali?
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Answer: C. 41
Sara = x, Ali = x + 3. 2x + 3 = 79, so x = 38 and Ali = 41.
- 3573.
Ali is 13 years older than Sara. The sum of their ages is 29. How old is Ali?
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Answer: C. 21
Sara = x, Ali = x + 13. 2x + 13 = 29, so x = 8 and Ali = 21.
- 3574.
Ali is 6 years older than Sara. The sum of their ages is 42. How old is Ali?
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Answer: C. 24
Sara = x, Ali = x + 6. 2x + 6 = 42, so x = 18 and Ali = 24.
- 3575.
Ali is 3 years older than Sara. The sum of their ages is 17. How old is Ali?
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Answer: C. 10
Sara = x, Ali = x + 3. 2x + 3 = 17, so x = 7 and Ali = 10.
- 3576.
Ali is 11 years older than Sara. The sum of their ages is 53. How old is Ali?
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Answer: C. 32
Sara = x, Ali = x + 11. 2x + 11 = 53, so x = 21 and Ali = 32.
- 3577.
Ali is 2 years older than Sara. The sum of their ages is 34. How old is Ali?
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Answer: C. 18
Sara = x, Ali = x + 2. 2x + 2 = 34, so x = 16 and Ali = 18.
- 3578.
Ali is 11 years older than Sara. The sum of their ages is 69. How old is Ali?
Show answer
Answer: C. 40
Sara = x, Ali = x + 11. 2x + 11 = 69, so x = 29 and Ali = 40.
- 3579.
Ali is 13 years older than Sara. The sum of their ages is 55. How old is Ali?
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Answer: C. 34
Sara = x, Ali = x + 13. 2x + 13 = 55, so x = 21 and Ali = 34.
- 3580.
Ali is 7 years older than Sara. The sum of their ages is 45. How old is Ali?
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Answer: C. 26
Sara = x, Ali = x + 7. 2x + 7 = 45, so x = 19 and Ali = 26.