Question

Sumit present age is 3 times the present age of his sister Charu five years from now he will be twice the age of his sister find their present age

Answer 1

let be charu's age is x yrs
and sumit's age is 3x
after five years the age of..
charu x+5
sumit 3x+5
according to question
2(x+5)=3x+5
2x+10=3x+5
2x-3x=5-10
-x=-5
then x=5
then the age of charu =5yrs
and the age of sumit=3*5=15yrs

Answer 2

let charu's age be x years

then, sumit age is 3x

AFTER 5 YEARS

sumit will be 3x + 5

charu will be x + 5

now ,

3x + 5 = 2( x + 5)

or, 3 x + 5 = 2x + 10

or, 3 x - 2x = 10 - 5

or, x = 5

charu age is 5 yeras and his brother's age is 15 years