Question

Eight years ago, the ratio of the ages of Rohan and Sohan was 5:6, respectively. Five years hence, the ratio of the ages of Mohan and Sohan will be 6:7, respectively. If Mohan is 3 years younger than Rohan, find the age of Rohan, 'a' years hence, where 'a' is the smallest two-digit composite number.

A 30 yrs
B 36 yrs
C 58 yrs
D 40 yrs
E None of these
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