A and B invest in a business in the ratio 3 : 5. After 6 months, C joins with an amount equal to B's. At the end of the year, in what ratio should the profit be divided?
A, B and C enter into a partnership by investing ₹2,000, ₹3,000 and ₹4,000 respectively. After one year, they share a profit of ₹900. What is B's share?