A ने ₹4,25,000 की पूंजी के साथ एक व्यवसाय शुरू किया। दो महीने बाद, B एक निश्चित पूंजी के साथ उसके साथ जुड़ गया। A द्वारा व्यवसाय शुरू करने के एक वर्ष के अंत में, लाभ को 4:2 के अनुपात में विभाजित किया गया। B ने कितना निवेश किया (₹ में)?

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?