25*10 will be the minimum and 165/10 will be the maximum
The maximum is 16. They need at least 25 so everyone getting long sleeve shirts is not an option, the minimum has to be 25 no matter what kind of shirts you buy. If everybody got a short sleeve shirt, 25*5 will be the minimum and 165/5 would be the maximum. The minimum, of course, is 25 shirts for 125 dollars and the maximum is 33 shirts for 165 dollars.