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Question

The product of Ramu's age (in years) five years ago with his age (in years) 9 years lager is 15. Find Ramu's present age.

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Solution

Let Ramu's present age be x years.
Then, his age 5 years ago =(x5) years
His age 9 years ago =(x+9) years

It is given that the product of these ages is 15

(x5)(x+9)=15

x2+4x60=0x2+10x6x60=0(x+10)(x6)=0

x=6orx=10

x10, so x=6

Hence, Ramu's present age is 6 years

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