Question

Four years ago from now, the ages of 'A' and 'B' were in the ratio 7:5, respectively. Ten years ago from now, the ages of 'A' and 'B' were in the ratio 2:1. Present age of 'A' is how much percent more than that of 'B'?

A 15%
B 30.42%
C 20%
D 28.57%
E 42%
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