A और B क्रमशः 3,000 रुपये और 5,000 रुपये के साथ एक साझेदारी में शामिल हुए। 5 महीने बाद A ने व्यवसाय छोड़ दिया। वर्ष के अंत में, कुल लाभ 15,000 रुपये है। A का हिस्सा ज्ञात कीजिए।

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?