Question

The average age of a man and his two twin sons born on the same day is 30 yr.The ratio of the ages of father to one of his son is 5:2 .What is the father’s ages

Answer 1

$let \: age \: of \: father \: be \: 5x \: and \: that \: of \: each \: son \: be \: 2x \\ then \: \frac{5x + 2x + 2x}{3} = 30 \\ \frac{9x}{3} = 30 \\ x = \frac{30 \times 3}{9} \\ x = 10$

therefore age of father = 5x = 5 × 10 = 50 yrs

Answer 2

Answer:

Step-by-step explanation: