A, B and C rent a pasture. A puts 5 oxen for 4 months, B puts 8 oxen for 5 months and C puts 10 oxen for 3 months for grazing. If the rent of the pasture is Rs. 180, then how much must B pay as his share of rent?

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?