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The ratio between the present ages of Tarun and Varun is 3 : 7, respectively. After 4 yr, Varun's age will be 39 yr. What was Tarun's age 4 yr ago ?
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- 12 yr
- 13 yr
- 19 yr
- 18 yr
- None of the above
Correct Option: D
Let Tarun and Varun's ages are 3k yr and 7k yr, respectively.
∴ 7k + 4 = 39
⇒ k = 5
Hence, Tarun's age 4 yr ago = 3 x 5 - 4 = 11 yr
