Question

The ages of X and Y are in the ratio 7:4. If the sum of their present ages is 55 then the age of X is:​

Answer 1

Answer:

let age of X is a

age of y is b

b=4/7 (a)

a+b =55

a(1+4/7) =55

11a/7 =55

a/7 =5

a=45