SOLUTION: The prom committee sells t-shirts to raise money for the prom. The profit from sales of 80 short sleeve t-shirts and 100 long sleeve t-shirts is $320. Profit from sales of 80 short

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Question 859338: The prom committee sells t-shirts to raise money for the prom. The profit from sales of 80 short sleeve t-shirts and 100 long sleeve t-shirts is $320. Profit from sales of 80 short sleeve t-shirts and 75 long sleeve t-shirts is $270. How much profit do they earn for each short sleeve t-shirt sale?
Answer by lwsshak3(11628) About Me  (Show Source):
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The prom committee sells t-shirts to raise money for the prom. The profit from sales of 80 short sleeve t-shirts and 100 long sleeve t-shirts is $320. Profit from sales of 80 short sleeve t-shirts and 75 long sleeve t-shirts is $270. How much profit do they earn for each short sleeve t-shirt sale?
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let x=number of short sleeve t-shirts sold
let y=number of long sleeve t-shirts sold
...
80x+100y=320
80x+75y=270
subtract:
25y=50
y=50/25
y=2
...
80x+100y=320
80x+200=320
80x=120
x=120/80
x=1.5
How much profit do they earn for each short sleeve t-shirt sale? $1.50