Question

b) Father is 30 years older than his son. After five years, he will be three times as old as his son will be. Find their present age. ​

Answer 1

Explanation:

40 Years is the right answer

Answer 2

son is 10 , father is 40

Explanation:

let x be the sons age then father is x + 30

in 5 years

son is x + 5 and father is x + 30 + 5 = x + 35

at this time the father is three times as old as his son , then

x + 35 = 3(x + 5)

x + 35 = 3x + 15 ( subtract x from both sides )

35 = x + 15 ( subtract 15 from both sides )

20 = x

then sons age = x = 10 and fathers age = x + 30 = 10 + 30 = 40