Question

The sum of the current age of A and B is 50 years. Before 5 years the ratio of their ages was 5:7. What is the difference in their current age?

Answer 1

Answer:

5years ago

5x,7x

10 years hence

(5x+10):(7x+10)=4:5

5(5x+10)=4(7x+10)

Upon simplication

3x=10

X=10/3

50/3+10,70/3+10

120/3+20

40+20=60

Avg=60/2=30