French coffee costs $8 per pound. Summation Coffee construction $7 per pound. How much of each type of coffee would 20 pounds of a blend contain if it sells for $7.50 per pound?
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f+s=20 f= french s=summation
8f+7s=150
f=20-s
8(20-s)+7s=150
-s=-10
s=10
f=10
8f+7s=150
f=20-s
8(20-s)+7s=150
-s=-10
s=10
f=10
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$7.5 = 1/2 ($8 + $7).
So it appears that there would be equal quantities of French and Summation coffee in the blend.
In other words, you have 10 pounds of French coffee and 10 pounds of Summation Coffee.
So it appears that there would be equal quantities of French and Summation coffee in the blend.
In other words, you have 10 pounds of French coffee and 10 pounds of Summation Coffee.
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By inspection you can see that the average cost of a pound is 7.50. Therefore, the answer is 10 pounds of each type.