The owner of a clothing store buys T-shirts for dollars each and sells them for dollars each. Last month she bought 600 T-shirts and sold 500 of them and made a profit of $2,800. This month she bought 400 T-shirts and sold them all and made a profit of $2,400. Which system of equations can be used to determine the values of and ?
Let the cost of each T-shirt be represented by C and the selling price of each T-shirt be represented by S.
From the given information, we can set up the following equations:
1. 600C - 500S = 2800 (Profit from last month)
2. 400C - 400S = 2400 (Profit from this month)
Therefore, the system of equations that can be used to determine the values of C and S is:
600C - 500S = 2800
400C - 400S = 2400