The ratio of father’s age to his son’s age is 8 : 5. The product of their age is 1440. The ratio of their ages after 6 years will be

Given, ratio of father’s age to his son’s age is $8 : 5.$

Let their ages be $8x$ and $5x$ respectively.

Given, product of their age is $1440.$

$8x × 5x = 1440$

$x² = 36$

$x = 6$

Father’s present age $= 8 × 6 = 48$

Son’s present age $= 5 × 6 = 30$

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