Question

The present age of Rahan is x years. If 1 year ago and after 7 years his average age is 5 . Find his present age ?

Answer 1

Answer:

Present age of Roshan = x years

1 year ago her age = x - 1 years

after 7 years her age = x + 7 years

x-1 + x + 7/2 = 5

x+x -1+ 7/2 = 5

2x - 6 = 5*2

2x - 6 = 10

2x = 10+ 6

2x = 16

x = 16/2

x=8

Therefore, her present age is 8 years