A and B started a business with initial investments in the ratio 14 : 15 and their annual profits were in the ratio 7 : 6. If A invested the money for 10 months, for how many months did B invest his money? Choose the correct choice: A) 2 B) 4 C) 6 D) 8 E) 9
Sol.   Suppose A invested Rs. 14x for 10 months and B invested Rs. 15x for y months. Then,   14x * 10 / 15x * y = 7/6 ⇒ y = 840 / 105= 
<gadget id="calculator">840 / 105</gadget>
<output>8</output>
8   Hence, B invested the money for 8 months.   Answer 8
<result>D</result>
A and B started a business with initial investments in the ratio 14 : 15 and their annual profits were in the ratio 7 : 6. If A invested the money for 10 months, for how many months did B invest his money?