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

Given

The ratio of Amit And his sister is 5:4
Amits Present age =45

Let His sister's present age=x

By Comparision
$\frac{5}{4} = \frac{45}{x} \\ > > 5x = 180 \\ > > x = \frac{180}{5} \\ > > x = 36$
So His sister's Present age is 36 years...

Hope it Helps...

Regards,
Leukonov.

Answer 2

Hey! Here it is:

Let age of Amit be 5x and his sister's be 4x.

The age of Amit= 45.

Therefore,
5x=45
x=9

His sister's age is= 4*9
= 36 years.