Question

manjit is now 12 years old and Mala is 2 years old. In how many years will Manjit be three times old as Mala.

Answer 1

Let,
 Manjit will be 3 times old as Mala after x years.
so, By using given condition
12+x=3(2+X)
x=3
ans is,.after 3 years.
(if some grammatical mistakes,sorry.)

Answer 2

let the age after which manjit will be 3 times older as mela bex
a/q 12+x=3(2+x)
⇒12+x=6+3x
⇒12-6=2x
⇒2x=6
⇒x=3
so after 3 years manjit will be 3 times as old as mala.