1.

Seven years ago ratio of the ages of father and son was 4 ∶ 1. Seven years hence from now the ratio of their ages will be 2 ∶ 1. What is the ratio of their present ages?

A. 7 ∶ 2
B. 3 ∶ 1
C. 5 ∶ 2
D. 7 ∶ 3
Answer» D. 7 ∶ 3


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