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If ratio of present ages of Shikha and Raj Kumar is 2 ∶ 1 and 15 years before the ratio between their ages was 3 ∶ 1, then the present age of Shikha is:
1. 30
2. 75
3. 45
4. 60

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Correct Answer - Option 4 : 60

Ratio of present ages of Shikha and Raj Kumar = 2 : 1

Let the present ages of Shikha and Raj Kumar = 2x and 1x

Before 15 years,

Ratio of ages of Shikha and Raj Kumar = 3 : 1

Thus, 

(2x - 15) / (1x - 15) = 3 / 1

2x - 15 = 3x - 45

x = 30

Therefore, present age of Shikha = 2 × 30 = 60 years.

Hence, 60 is correct.

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