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I NEED THIS before school ends in a hour

Sue buys lamps for $15 each and sleeping bags for $12 each. She spent a total of $600 on a total of 45 items for a large shelter.
15x + 12y = 600
x + y = 45

What does (20, 25) mean in this context?

User Barracuda
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Answer: The answer for this is 9.45

User Alex Shnayder
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