1.

The ratio of ages of the father and mother was 11 ∶ 10 when their son was born. The ratio of ages of the father and mother will be 19 ∶ 18 when the son will be twice his present age. What is the ratio of present ages of father and mother?

A. 15 ∶ 14
B. 14 ∶ 13
C. 16 ∶ 15
D. 17 ∶ 16
Answer» B. 14 ∶ 13


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