A and B started a partnership business investing some amount in the ratio of 3 : 5. C joined then after 3 months with an amount equal to that of B. In what proportion should the profit at the end of one year be distributed among A, B and C? Choices:	A) 4 : 9 : 8	B) 5 : 7 : 4	C) 6 : 10 : 7.5	D) 7 : 9: 4	E) 5 : 4 : 8
Let the initial investments of A and B be 3x and 5x.   A : B : C = (3x x 12) : (5x x 12) : (5x x 9) = 36 : 60 : 45   = 6 : 10 : 7.5.   ANSWER :6 : 10 : 7.5
<result>C</result>
A and B started a partnership business investing some amount in the ratio of 3 : 5. C joined then after 3 months with an amount equal to that of B. In what proportion should the profit at the end of one year be distributed among A, B and C?