Question

the ratio of the age of A & B is 7:9. After 3 years ratio becomes 4:5. find their ages.​

Answer 1

Answer:

A's Age = 21 Years

B's Age = 27 Years

Step-by-step explanation:

Let A's age be 7x

Let B's age be 9x

A.P.Q

7x+3 / 9x+3 = 4/5

5 ( 7x+3 ) = 4 ( 9x+3 )

35x + 15 = 36x + 12

36x - 35x = 15-12

x = 3

A's Age = 7×3 = 21 Years

B's Age = 9×3 = 27 Years

Answer 2

Step-by-step explanation:

let the present of A and B is 7x and 9x

After 3 years, A's age=(7x+3)years

B's age =(9x+3)years

A to Q.

7x+3 :9x+3= 4:5

7x+3/ 9x+3 = 4/5

By cross multiplication

5(7x+3) = 4(9x+3)

35x + 15 = 36x + 12

35x - 36x = 15-12

X = 3

So,

the present age of A is 7x = 7×3 =21 years

the present age of B is 9x= 9×3= 27 years

Hope this will help u