1.

The ratio of age of son and father is 1 ∶ 5. The ratio of father and mother is 8 ∶ 7. The difference of father and mother is 5 years. Find the age of son.

A. 6 years
B. 5 years
C. 2 years
D. 8 years
E. 10 years
Answer» E. 10 years


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