Final answer:
B's share in the total profit of Rs.25,000 is Rs. 7,500. Option A is correct.
Step-by-step explanation:
To solve this problem, let's first calculate the ratio in which the profits will be shared among A, B, and C.
A invested for the full 2 years, B for 2 years, and C for 1.5 years (6 months is half a year).
The ratio of their investments multiplied by the time they invested will give the ratio of their profits.
A's investment = Rs. 20,000 for 2 years = Rs. 20,000 * 2 = Rs. 40,000
B's investment = Rs. 15,000 for 2 years = Rs. 15,000 * 2 = Rs. 30,000
C's investment = Rs. 20,000 for 1.5 years = Rs. 20,000 * 1.5 = Rs. 30,000
The total investment for profit sharing = Rs. 40,000 (A) + Rs. 30,000 (B) + Rs. 30,000 (C) = Rs. 100,000
Now, let's find the ratio of their profits:
A's share = (A's investment / Total investment) * Total profit
A's share = (40,000 / 100,000) * 25,000
A's share = Rs. 10,000
B's share = (B's investment / Total investment) * Total profit
B's share = (30,000 / 100,000) * 25,000
B's share = Rs. 7,500
C's share = (C's investment / Total investment) * Total profit
C's share = (30,000 / 100,000) * 25,000
C's share = Rs. 7,500
Therefore, B's share in the total profit of Rs. 25,000 is Rs. 7,500 (Option a).