Question

1 years ago the ratio of the ages of A and B was 3:4 the ratio of their ages after 7 years from now will be 7:9 what will be the ratio of the ages of A and B after 11 years from now?
1)11:16
2)15:19
3)10:13
4)9:11
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Answer 1

Answer:

Ratio of present age of A and B = 3 : 4

Let the present age of A and B be 3x and 4x respectively.

After 5 years the ratio becomes 7 : 9

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

27x + 45 = 28x + 35

x = 10

So, the present age of A is 3x

→ 3 × 10 = 30 years

Hence, the present age of A is 30 years.

Answer 2

Answer:

"The ratio of present ages of A and B is 3 : 4. After 5 years the ratio becomes 7 : 9. What is the present age (in years) of A?"