Ramu's father is four times as old as Ramu.After 16 years,he will be just twice his son. find their present age.

@kishorebala: Good answer! Keep posting!

Let the present age of Ramu be *x* years.

Given, Present age of Ramu's father = 4 × Present age of Ramu

∴ Present age of Ramu's father = 4*x*

16 years hence,

Age of Ramu = *x* + 16

Age of Ramu's father = 4*x* + 16

Age of Ramu's father = 2 × Age of Ramu (Given)

∴ 4*x* + 16 = 2(*x* + 16)

⇒ 4*x* + 16 = 2*x* + 32

⇒ 4*x* – 2*x* = 32 – 16 (Transposing 2*x* to LHS and 16 to RHS)

⇒ 2*x* = 16

∴ Present age of Ramu = 8 years

Present age of Ramu's father = 4*x* = 4 × 8 years = 32 years

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