Question 1033350
A coffee distributor needs to mix a(n) Rift Valley coffee blend that normally sells for $8.00 per pound with a Mexican Shade Grown coffee blend that normally sells for $10.40 per pound to create 20 pounds of a coffee that can sell for $8.12 per pound. 

How many pounds of each kind of coffee should they mix?
Quantity Eq:: e + t = 20 lbs
Value Eq:::: 8e + 10.4t = 8.12*20
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8e + 8t = 8*20
8e + 10.4t = 162.4
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Subtract and solve for "t":
2.4t = 2.4
t = 1 lb (amt. of $10.40 coffee needed)
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e = 20-1 = 19 lb (amt. of $8 coffee needed)
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Cheers,
Stan H.
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