Civil Service Exam Reviewer · Ratio and Proportion · hard
The present ages of a father and his son are in the ratio 3 : 2. 2 years ago, the ratio was 19 : 12. What is the son's present age?
- 21 years
- 14 years
- 12 years
- 16 years
Answer
B. 14 years
Solution
Ages 3k and 2k: (3k − 2)/(2k − 2) = 19/12 → k = 7. Son = 2 × 7 = 14 years.
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