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Question

18 years ago, the ratio of A' s age to B's age was 8:13. Present ratio of their ages is 5:7. What is the present age of B?
  1. 60 years
  2. 50 years
  3. None of these
  4. 90 years
  5. 70 years


Solution

The correct option is E 70 years
8x+1813x+18=57
56x + 126 = 65x + 90
9x = 36
x = 4
B=13×4+18=70

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