Question

The product of Ramu’s age (in years) five years ago and his age (in years) nine years later is 15. Determine Ramu’s present age.

Answer 1

Given

let ramu's present age be 'x'years

5 years ago

(x-5)

9years later

(x+9)

product of their ages

(x-5)(x-9)=15

x^-9x-5x+45=15

x^-14x+30=0

x =(14-√76)/2=7-√ 19 = 2.641

x =(14+√76)/2=7+√ 19 = 11.359

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