The ratio of the present age of a father to that of his son is 5 : 2 . After 5 years their ages will be in the ratio of 7 : 3 . The present age of the - Quantitative Aptitude MCQ Competitive Exam 2026 | ExamTest.live

mediumMCQCompetitive Exam2026Quantitative Aptitude

1 mark

The ratio of the present age of a father to that of his son is 5 : 2 . After 5 years their ages will be in the ratio of 7 : 3 . The present age of the father is:

Solution & Step-by-step Explanation

Let the present age of the father be 5 x and the son be 2 x .After 5 years: Father’s age = 5 x + 5 Son’s age = 2 x + 5 According to the question, the ratio becomes 7 : 3 : \frac{5 x + 5}{2 x + 5} = \frac{7}{3} Cross-multiplying to solve for x : 3 (5 x + 5) = 7 (2 x + 5) 15 x + 15 = 14 x + 35 15 x - 14 x = 35 - 15 x = 20 Present age of the father: Father’s Present Age = 5 x = 5 \times 20 = 100 years

Try it yourself before checking the explanation above.

The ratio of the present age of a father to that of his son is 5 : 2 . After 5 years their ages will be in the ratio of 7 : 3 . The present age of the father is:

100 years

95 years

90 years

85 years

Practice with timed mock tests and track your performance across Quantitative Aptitude.