A and B invests Rs.3000 and Rs.10000 respectively in a business. If A doubles his capital after 6 months. In what ratio should A and B divide that year's profit?
Choose the most appropriate option:  A) 9:6  B) 9:8  C) 9:20  D) 9:9  E) 9:5
(3*6 + 6*6): (10*12)   54:120 =&gt; 9:20.Answer:9:20
<result>C</result>
A and B invests Rs.3000 and Rs.10000 respectively in a business. If A doubles his capital after 6 months. In what ratio should A and B divide that year's profit?