Question
A and B started a retail store with initial investments
in the ratio 7:8 and their annual profits were in the ratio 2:3. If A invested the money for 8 months, then for how many months did B invest his money?ÂSolution
Suppose A invested Rs. 7x for 8 months and B invested 8x for y months then, ⇒  (7x × 8)/(8x × y) = 2/3 ⇒  y = (56x × 3)/(8x × 2) ⇒  y = 168x/16x ⇒  y = 10.5
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