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Question

The ages of Nishi and Vinni are in the ratio of 6:5. After 9 years the ratio of their ages will be 9:8. What is the difference in their ages?

  • 9 years
  • 7 years
  • 5 years
  • 3 years
  • None of these
Answer- D

(6X+9)/(5X+9) = (9/8)

=> 8(6X+9) = 9(5X+9)

=> 48X+72 = 45X + 81

=> 3X = 9

Therefore X = 3

Difference = 6X-5X = X = 3 years


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