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It takes 3 parts of black paint and 5 parts of white paint [#permalink]
09 Mar 2004, 08:00
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It takes 3 parts of black paint and 5 parts of white paint to create a 2 gallon mixture of grey paint. If black and white paint can only be purchased in 1 gallon and 1/2 gallon cans, what is the smallest number of gallons needed to create the grey mixture?