Question

5 years ago, the average age of Neeta and Smita was 18 years. Today the average
age of Neeta, Smita and Geeta is 21 years. How old will be Geeta after 5 years?​

Answer 1

Answer:

22 Years

Step-by-step explanation:

Let the present age of neeta be x

and present age of Smita be y

and present age of Geeta be z

Given

$\frac{(x - 5) + (y - 5)}{2} = 18$

or

$x + y -10 = 36$

$x + y = 46$

also given

$\frac{x + y + z}{3} = 21$

$x + y + z = 63$

$46 + z = 63$

$z = 17$

After 5 years, geeta will be 22 years