1.

Seven years ago, the ratio of the ages of A and B was 4 ∶ 5. Eight years hence, the ratio of the ages of A and B will be 9 ∶ 10. What is the sum of their present ages in years?

A. 32 years
B. 41 years
C. 56 years
D. 82 years
Answer» C. 56 years


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