Three partners A, B, and C share profits such that A gets two-thirds, while B and C split the remaining profit equally. When the profit rate increases from 5% to 7%, A's income rises by Rs. 200. What is the capital amount invested by B?

Explanation

The profit sharing ratio is A : B : C = 2/3 : 1/6 : 1/6, which simplifies to 4 : 1 : 1. Let the total capital be x. The increase in A's income due to the profit rate change is calculated as x * (2/100) * (2/3) = 200. Solving this gives x = 15000. Therefore, B's capital is (1/6) of 15000, which equals Rs. 2500.