A person was asked to state his age in years. His reply was "take my age 3 yr hence,multiply it by 3 and then subtract 3 times my age 3 yr ago and you will know how old! am.' What was the age of the person? (A) 24 yr (B) 20 yr (C) 32 yr (D) 18 yr

Options

A. 18 yr
B. 20 yr
C. 24 yr
D. 32 yr

Answer

A

Explanation

Let the present age of the person = `x yr`
According to the question,
`3(x + 3) - 3 (x-3) = x `
`implies 3x + 9 - 3x + 9 = x`
`therefore x = 18 yr `
So, the person is 18 yr old.