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Fifteen years from now Ravi’s age will be four times his present age. What is Ravi’s present age?

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Let Ravi’s present age be x years.

Fifteen years later, Ravi’s age = 4 × His present age x + 15 = 4x

On transposing x to R.H.S, we obtain

15 = 4x − x

15 = 3x

On dividing both sides by 3, we obtain

15/3 = 3x/3

5 = x

Hence, Ravi’s present age = 5 years

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