AP ICET 18th Sep 2021 Shift 2 Paper

'A' and ' $\mathit{B}$ ' started a partnership firm investing amounts in the ratio $3:5$. After 6 months ' $\mathit{C}$ ' joined them with an investment equal to that of ' $\mathit{B}$ '. At the end of the year if profit is Rs. 10,500 , then 'B's share of profit (in Rs.) is