A and B invests Rs.3000 and Rs.6500 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.
A) 8 : 8	B) 9 : 8	C) 9 : 6	D) 9 : 5	E) 9 : 13

Rationale: "( 3 * 6 + 6 * 6 ) : ( 6.5 * 12 ) 54 : 78 = > 9 : 13 answer : e"
Answer: E