Question

14. The ages of A and B are in the ratio 5:7. Four years from now the ratio of their ages will be 3:4. The present age of B is​

Answer 1

Answer:

Present age of B is 28 years

Step-by-step explanation:

Let Present ages of A and B be 5x and 7x

Ratio of Ages after 4 years = 5x+4:7x+4

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

By cross multiplying we get 20x + 16 = 21x + 12

x = 4

Present age of B is 7x = 7 x 4 = 28 years