P starts a business with Rs. 4,000. After 4 months, Q joins with P as his partner.
After a year, the profit is divided in the ratio 2 : 3. Q's contribution in the capital is ?  Select.
A) Rs. 7,000
B) Rs. 11,000
C) Rs. 8,000
D) Rs. 10,000
E) Rs. 9,000
Solution: Let's Q's capital is x.   P : Q = (4,000 * 12): (x : 8) = 2 : 3 .   So Q's share = (4000 * 12/8x) = 2/3   =&gt; x = (4000 * 12 * 3)/(2 * 8) =Rs. 9,000   Answer: Option Rs. 9,000
<result>E</result>
P starts a business with Rs. 4,000. After 4 months, Q joins with P as his partner.
After a year, the profit is divided in the ratio 2 : 3. Q's contribution in the capital is ?