Basic Maths and Reasoning MCQs (page 177 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 3521–3540.
- 3521.
Ali is 12 years older than Sara. The sum of their ages is 54. How old is Ali?
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Answer: C. 33
Sara = x, Ali = x + 12. 2x + 12 = 54, so x = 21 and Ali = 33.
- 3522.
Ali is 7 years older than Sara. The sum of their ages is 49. How old is Ali?
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Answer: C. 28
Sara = x, Ali = x + 7. 2x + 7 = 49, so x = 21 and Ali = 28.
- 3523.
Ali is 14 years older than Sara. The sum of their ages is 56. How old is Ali?
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Answer: C. 35
Sara = x, Ali = x + 14. 2x + 14 = 56, so x = 21 and Ali = 35.
- 3524.
Ali is 11 years older than Sara. The sum of their ages is 85. How old is Ali?
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Answer: C. 48
Sara = x, Ali = x + 11. 2x + 11 = 85, so x = 37 and Ali = 48.
- 3525.
Ali is 10 years older than Sara. The sum of their ages is 82. How old is Ali?
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Answer: C. 46
Sara = x, Ali = x + 10. 2x + 10 = 82, so x = 36 and Ali = 46.
- 3526.
Ali is 13 years older than Sara. The sum of their ages is 71. How old is Ali?
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Answer: C. 42
Sara = x, Ali = x + 13. 2x + 13 = 71, so x = 29 and Ali = 42.
- 3527.
Ali is 4 years older than Sara. The sum of their ages is 16. How old is Ali?
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Answer: C. 10
Sara = x, Ali = x + 4. 2x + 4 = 16, so x = 6 and Ali = 10.
- 3528.
Ali is 12 years older than Sara. The sum of their ages is 34. How old is Ali?
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Answer: C. 23
Sara = x, Ali = x + 12. 2x + 12 = 34, so x = 11 and Ali = 23.
- 3529.
Ali is 10 years older than Sara. The sum of their ages is 34. How old is Ali?
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Answer: C. 22
Sara = x, Ali = x + 10. 2x + 10 = 34, so x = 12 and Ali = 22.
- 3530.
Ali is 8 years older than Sara. The sum of their ages is 32. How old is Ali?
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Answer: C. 20
Sara = x, Ali = x + 8. 2x + 8 = 32, so x = 12 and Ali = 20.
- 3531.
Ali is 5 years older than Sara. The sum of their ages is 75. How old is Ali?
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Answer: C. 40
Sara = x, Ali = x + 5. 2x + 5 = 75, so x = 35 and Ali = 40.
- 3532.
Ali is 10 years older than Sara. The sum of their ages is 70. How old is Ali?
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Answer: C. 40
Sara = x, Ali = x + 10. 2x + 10 = 70, so x = 30 and Ali = 40.
- 3533.
Ali is 5 years older than Sara. The sum of their ages is 19. How old is Ali?
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Answer: C. 12
Sara = x, Ali = x + 5. 2x + 5 = 19, so x = 7 and Ali = 12.
- 3534.
Ali is 2 years older than Sara. The sum of their ages is 74. How old is Ali?
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Answer: C. 38
Sara = x, Ali = x + 2. 2x + 2 = 74, so x = 36 and Ali = 38.
- 3535.
Ali is 7 years older than Sara. The sum of their ages is 81. How old is Ali?
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Answer: C. 44
Sara = x, Ali = x + 7. 2x + 7 = 81, so x = 37 and Ali = 44.
- 3536.
Ali is 15 years older than Sara. The sum of their ages is 87. How old is Ali?
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Answer: C. 51
Sara = x, Ali = x + 15. 2x + 15 = 87, so x = 36 and Ali = 51.
- 3537.
Ali is 10 years older than Sara. The sum of their ages is 76. How old is Ali?
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Answer: C. 43
Sara = x, Ali = x + 10. 2x + 10 = 76, so x = 33 and Ali = 43.
- 3538.
Ali is 2 years older than Sara. The sum of their ages is 82. How old is Ali?
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Answer: C. 42
Sara = x, Ali = x + 2. 2x + 2 = 82, so x = 40 and Ali = 42.
- 3539.
Ali is 6 years older than Sara. The sum of their ages is 20. How old is Ali?
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Answer: C. 13
Sara = x, Ali = x + 6. 2x + 6 = 20, so x = 7 and Ali = 13.
- 3540.
Ali is 13 years older than Sara. The sum of their ages is 69. How old is Ali?
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Answer: C. 41
Sara = x, Ali = x + 13. 2x + 13 = 69, so x = 28 and Ali = 41.