A and B started a business with Rs.3000, Rs.4500 respectively. find the share of A in profit of Rs.7500 after a year.

\par Investment of A = 3000

\par Investment of B = 4500

\par Ratio of A, B investment = 3000 : 4500 = 2 : 3

\par So, the profit should be shared in 2 : 3 ratio

\par A's share = \frac{2}{5} \times 7500  \par = 3000