Question

4 years ago the average of pami's age that time and ruhi's age that time was 12 years.three years from now,if the respective ratio between pami's age and ruhi's age that time will be 9:10,what is present age of pami?

Answer 1

Answer:Here let present age of pami and ruhi be P and R

Four years ago,

Pami = P - 4

Ruhi = R - 4

And avg = ( P - 4 + R - 4) / 2 = 12

So P + R = 24 + 8 = 32....(1)

After 3 years

Ruhi age = R + 3

Pami age = P + 3

And (R + 3) / ( P + 3) =9 / 10

Cross multiply to get

9 P - 10 R = 3 ..........(2)

Solve two equations

p = 17

R = 15

This is your ans

Step-by-step explanation: