Question

The present age of father is two times more than the present age of son. If after 6 years the ratio of age of father and son is 7 : 3, then find the age of son after 5 years.

Answer 1

Answer:

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Correct option is C)

Let the present ages of father and son be 7x and 3x.

After 10 years, their ages will be 7x+10 and 3x+10.

According to the question, we have

3x+10

7x+10

=

1

2

1(7x+10)=2(3x+10)

7x+10=6x+20

7x−6x=20−10

x=10

Then present age of father is 7x, i.e. 7×10=70 years.