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OpenStudy (anonymous):
Starbucks charges $9 per pound for French Roast and $8 per pound for Sumatran coffee. How much of each type should be used to make a 20 pound blend that sells for $8.60 per pound?
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OpenStudy (anonymous):
\[9x+8(20-x)=20\times 8.6\] should solve this one
OpenStudy (anonymous):
Thanks for the formula, huge help!
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