Question 809883: Kenny wants to buy 18 gifts. He has $180 to spend. He can buy t-shirts for $9 and sweatshirts for $15. How many of each item can he buy?
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! 9t + 15s = 180
t + s = 18
t = 18 - s
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9t + 15s = 180
9(18 - s) + 15s = 180
162 - 9s + 15s = 180
6s = 18
Answer:
s = 3
t = 15
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