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let x = pounds of coffee at 2$/pound

2.00X + 1.20 (3) = 1.76 (X+3)

2.00X + 3.60 = 1.76X + 5.28

.24X = 1.68

X = 7 pounds

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Q: How many pounds of coffee beans selling for 2.00 per pound should be mixed with 3 pounds of coffee beans selling for 1.20 per pound to obtain a mixture selling for 1.76 per pound?
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