Question

The sum of ritu's age and Ashu's age is 25 .Ritu is 12 year old. Write an equation to find Ashu's age.

Answer 1

let ashus age be 'n',ritus m

therefore 

n+m=25

n+12=25

n=25-m

or

x=25-12

Answer 2

Heya !!

Here is your solution !!!

Let the ritu's age be a, and ashu's age be b..

so,

a + b = 25
b + 12 = 25


so that the eq will be

n = 25 -a and x = 25 -12

glad helps you!!
thanks