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a person wishes to mix coffee worth $9per pound with coffee worth $3 per pound to get a 90 lb of a mixture worth $3 per lb. how many pounds of the $9 and $3 coffees will be needed?
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a person wishes to mix coffee worth $9per pound with coffee worth $3 per pound to get a 90 lb of a mixture worth $3 per lb. how many pounds of the $9 and $3 coffees will be needed?

User Paulgreg
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2 Answers

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you need 90 pounds of the 3 dollar coffee. if you added even a single pound of 9 dollar coffee the mixture would be more than 3 dollars.
User Moosa Baloch
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8.3k points
2 votes
31 pounds of 3$ and 12 of the 9$
User ISanych
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7.4k points
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