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Mathematics, 21.08.2021 09:20 Fhalcon543

A housepainter buys 40 gallon-size cans of paint for $920. Some of these are blue paint that cost $30 per gallon and the rest are white paint that cost $20 per gallon. How many gallons of white paint does the painter buy?

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A housepainter buys 40 gallon-size cans of paint for $920. Some of these are blue paint that cost $3...
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