Question

Sum of present ages of father and son is 35. Five years from now, the ratio of their
ages will be 72. Determine their age difference in years.
26
25​

Answer 1

Answer:

Let father age is 7x

And son age is 2x

then after 15 year father age is 7x+15

After 15 year son age is 2x+15

⇒

2x+15

7x+15

=

1

2

⇒4x+30=7x+15

⇒4x−7x=15−30

⇒−3x=−15⇒x=5

Hence father present age=7×5=35

Son present age=2×5=10

difference of father and son age=35−10=25

So father age was 25 years when son was born