Question

The avrege age of 3 sister is 15 if the ages of 2 sister are 12 years and 15 years the age of the third sister is

Answer 1

Answer:

Step-by-step explanation:

Firstly multiply 15 with 3 as there are three sisters and through which we get 45

Now what u need to do is multiply the average of two sisters with 2 and what u get is 24..

Now if you substract 45 from 24 the remaining no. Is the very age of the third sister and that is 21...

So the age of the third sister is 21

Answer 2

45-27=18. yrs..........