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.