Question

after 12 years , kanwar shall be 3 times as old as he was 4 years ago. find his present age

Answer 1

Let his present age be x years.

4 years ago,His age = (x - 4)years

After 12 years his age = [x +12] years

A/Q,   [x - 4 ] 3 = [ x+12]

⇒ 3 x - 12 = x + 12

⇒ 2 x =24

∴ x = 12

∴His present age = 12 years.

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Answer 2

Let the present age of Kanwar is x years

Kanswar's age after 12 years = (x + 12) years

Kanwar's age 4 years ago = (x – 4) years

Given (x + 12) = 3(x – 4)

⇒ x + 12 = 3x – 12

⇒ 12 + 12 = 3x – x = 2x

⇒ 2x = 24

Hence x = 12

Kanwar's present age is 12 years.