A and B invests Rs.3000 and Rs.4000 respectively in a business. If A doubles his capital after 6 months. In what ratio should A and B divide that year's profit?  Pick one:  A) 9:5  B) 9:8  C) 9:2  D) 9:9  E) 9:1
(3*6 + 6*6): (4*12)   54:48 =&gt;   9:8   Answer:9:8
<result>B</result>
A and B invests Rs.3000 and Rs.4000 respectively in a business. If A doubles his capital after 6 months. In what ratio should A and B divide that year's profit?