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Mathematics, 14.04.2020 22:40 evaeh
A merchant has coffee worth $70 a pound that she wishes to mix with 40 pounds of coffee worth $90 a pound to get a mixture that can be sold for $80 a pound. How many pounds of the $70 coffee should be used?
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A merchant has coffee worth $70 a pound that she wishes to mix with 40 pounds of coffee worth $90 a...
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