15 years age a's age was 9/2 of b's if the ratio of their present ages is 12 :

Question

15 years age a's age was 9/2 of b's if the ratio of their present ages is 12 : 5, what is the average of their present ages ?

Options:

A . 41.5 years

B . 42.5 years

C . 43.5 years

D . 44.5 years

Answer: Option B
Explanation :

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