Ajay, Baku, and Chettu enter into a partnership. Ajay contributes one-third of the whole capital, while Baku contributes as much as the contribution of Ajay and Chettu together. If the profit at the end of the year is Rs. 90,000, how much would Chettu receive (in Rs.)?

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?