In a partnership involving A, B, and C, A has invested Rs.5000. If the total profit is Rs.800, with A receiving Rs.200 and C receiving Rs.130, what is the amount of capital contributed by B?

Explanation

First, sum A's and C's profit shares: 200 + 130 = 330. Subtract this from the total profit: 800 - 330 = 470, which is B's profit share. Since A's profit (Rs.200) corresponds to Rs.5000 capital, we set up the ratio: 200 : 5000 = 470 : x. Solving for x gives B's capital as Rs.11750.