Question

4
The age of A and B are in the ratio 5 : 7. Four years from now the ratio of their ages will be
3:4. Then the present age of Bis:
21 years
a 20 years (6) 28 years (c) 15 years
for of​

Answer 1

Answer:

15 years

Step-by-step explanation:

5/7=x/21

x=5/7 × 21

x=15