Question

The ratio of ages of A & B is 3:4 after 12 year. The ratio of Their ages will be 7:8. find the present age of A​

Answer 1

Answer:

9

Step-by-step explanation:

A:B = 3:4

Let their common multiple be z

therefore A = (3z) yrs & B = (4z) yrs

After 12 yrs

A = 3z+12) yrs & B= (4z+12)yrs

( see above in photo for next steps)

z= 3

present age of A=3(3) ==9