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Billy purchased 100 shirts at a cost of $15 each and planned to resell them. The first week he sold some of them for $25 each. The second week he sold the rest for $20 each. If his total profit was $600, how many shirts did he sell the first week?

 

<3

 Oct 2, 2020
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S + T = 100,
25S + 20T = 600 + 1500, solve for S, T

 

S = 20 shirts were sold in the 1st  week at 25 dollars each.

T = 80 shirts were sold in the 2nd week at 20 dollars each.

 Oct 2, 2020

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