Multiple choice

The ratio of age of Subash five years ago to age of Dinesh five years ago is 2: 3. The ratio of age of Dinesh five years hence to age of Naveena five years hence is 8: 9. If Naveena is 15 years elder than Subash, find the present age of Dinesh.

  1. 25 years

  2. 30 years

  3. 35 years

  4. 40 years

  5. 20 years
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let ages 5 years ago be S-5 = 2k, D-5 = 3k. Let ages 5 years hence be D+10 = 8m, N+10 = 9m. Solving the system with N = S + 15 leads to D = 35.

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