आकाश ने 21,000 रुपये के साथ एक व्यवसाय शुरू किया और बाद में बाला 36,000 रुपये के साथ उसमें शामिल हो गया। यदि वर्ष के अंत में लाभ को समान रूप से विभाजित किया जाता है, तो बाला कितने महीनों के बाद शामिल हुआ?

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?