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Five years ago, the total of the ages of a father and his son was 40 years. The ratio of their present ages is 4 : 1. What is the present age of the father ? | |
A. | 30 years [Wrong Answer] |
B. | 25 years [Wrong Answer] |
C. | 20 years [Wrong Answer] |
D. | None of these [Correct Answer] |