A, B and C started a business with investments in the ratio 20 : 15 : 12. After 3 months, C withdrew half of his investment. If after a total of 12 months, a profit of Rs. 3,23,000 is divided among them, what is the share of C?

Three partners invested in a business in the ratio 8:5:4. They invested their capital for 3 months, 10 months, and 9 months respectively. What was the ratio of their profits?

A started a business with an investment of ₹21,000 and after a few months, B joined him with an investment of ₹15,000. At the end of the year, the total profit was divided between them in the ratio 12 : 5. After how many months did B join the business?