Question

Amit's and his sister's ages are in the ratio 5 : 4. If Amit is 45 years old, how old is his sister?

Answer 1

Let amit's age is 5x and his sister age is 4x

If 5x =45

x=45/5

x=9

Then,

Sister's age =4x=4*9=36

Amit's sister age is 36 years