A and B started a partnership business investing some amount in the ratio of 3:5. C joined them after six 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?	Select:	A) 5 : 6 : 10	B) 6 : 10 : 5	C) 6 : 5 : 10	D) 10 : 6 : 5	E) none
Sol.   Let the initial investments of A and B be 3x amd 5x.   A : B : C = (3x * 12) : (5x * 12) : (5x * 6) = 36 : 60 : 30 = 6 : 10 : 5.   Answer 6 : 10 : 5
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A and B started a partnership business investing some amount in the ratio of 3:5. C joined them after six 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?