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After 8 years Raj will be 3 times as old as he was 2 years ago. His present age is

(A) 7 yrs (B) 9 yrs(C) 10 yrs (D) 11 yrs

2
by EMR

the answer is 7 years

please see the explanation :

let the present age of Raj = x , after 8 years Age of Raj = x+8 , before two years , Age of Raj = x-2 , therefore according to problem , x+8 = 3(x-2) => x+8 = 3x - 6 => x+8 +6 = 3x => x+14 = 3x => 3x-x = 14 => 2x=14 => x=14/2 => x=7 ..hence age of raj = 7 years

7 years

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