SOLUTION: A store sells regular coffee for $4 a pound and gourmet coffee for $7 a pound. to get rid of 40 pounds of the gourmet coffee, a shopkeeper makes a blend to put on sale for $5 a pou
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-> SOLUTION: A store sells regular coffee for $4 a pound and gourmet coffee for $7 a pound. to get rid of 40 pounds of the gourmet coffee, a shopkeeper makes a blend to put on sale for $5 a pou
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Question 189324: A store sells regular coffee for $4 a pound and gourmet coffee for $7 a pound. to get rid of 40 pounds of the gourmet coffee, a shopkeeper makes a blend to put on sale for $5 a pound. How many pounds of regular coffee should he use? Answer by checkley75(3666) (Show Source):
You can put this solution on YOUR website! 4r+7g=5(g+r)
4r+7*40=5(40+r)
4r+280=200+5r
4r-5r=200-280
-r=200-280
-r=-80
r=80 ans. for the pounds of regular coffee.
Proof:
4*80+7*40=5(40+80)
320+280=5*120
600=600
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