Question

5 year ago the ratio of a 's and b's age was 5:6 . the ratio of their ages will be 7 :8 after 5 year. what is the ratio of A's age present age and B's present age​

Answer 1

Step-by-step explanation:

let present age of a and b be x

For,

a:b = 5:6 

Let the common multiple be c. there fore,

a=5c and b=6c and

A age fine years from now is a+5 

B age fine years from now is b+5 

hence, 

  (a+5):(b+5)=7:8

 ⇒ 8a+40=7b+35

⇒ 8a-7b=40-35

= a-b=5

hence the 

hence the present age of A is 11

and B is 10