A starts business with Rs. 3500 and after 5 months, B joins with A as his partner. After a year, the profit is divided in the ratio 2 : 3. What is B's contribution in the capital?  Choose the correct choice from the following options
A) Rs. 7500
B) Rs. 8000
C) Rs. 8500
D) Rs. 9000
E) Rs. 9500
A invests 3500 Rs for 12 months (Why 12 - because profit is given of 1 year) in the ratio of 2.   B invests X Rs for 7 months (Why 7 - because B joins A after 5 months and profit is given of 1 year) in the ratio of 3.   3500*12+X*7 = 2/3.   42000+7X = 2/3.   7X = 3/2*42000.   X = 9000.   ANSWER Rs. 9000
<result>D</result>
A starts business with Rs. 3500 and after 5 months, B joins with A as his partner. After a year, the profit is divided in the ratio 2 : 3. What is B's contribution in the capital?