Ten years ago, the sum of ages of a father and his son was 34 years. If the ratio of present ages of the father and son is 7:2, find the present age of the son.
Answer & explanation
Correct answer: option 3
According to the question:
Ten years ago, the sum of ages of a father and his son was 34 years. We can also say that: Sum of present age of father and son is:
S + F = 54
Ratio: 7: 2
So, the present age of son: \(\frac{2 }{9 }\) x 54 = 12 years