Question

The present age of a son is half the present age of his father. Ten years ago, the father was thrice as old as his son. What are their present age?​

Answer 1

Answer:

5%

Step-by-step explanation:

Answer 2

Answer:

Father is 40 and son is 20

Step-by-step explanation:

Present age : S = F/2 ( S be son and F be father)       (1)

10 years ago:  F-10 = 3(S-10)

=====> F= 3S-30+10 = 3S-20  { Put this value in (1) }

S= (3S-20)/2

====> S=20, Therefore F = 40