A and B start a business such that their initial investment is Rs. 3000 and Rs.4000 respectively. C joins them after 7 months by investing some amount. After one year the ratio of profit share of B to that of C is 8:5. Find the ratio of the investment of A to that of C.
1:2
Let the investment of C be x Profit of A : Profit of B : Profit of C = 3000× 12 : 4000× 12 : x× 5
4000×12x×5 = 85
x = Rs.6000
Investment of AInvestment of B=12