1.

Five years ago, the ratio of the ages of A and B was 3 : 4. Five years from now, the ratio of their ages will be 4 : 5. What is the ratio of A and B, 10 years from now?

A. 9 : 11
B. 6 : 7
C. 5 : 6
D. 7 : 9
Answer» B. 6 : 7


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