Chocolates costing $8 per pound are to be mixed with chocolates costing $3 per pound to make a 20 pound mixture. If the mixture is to sell for $5 per pound, how many pounds of each chocolate should be used?
Which of the following equations could be used to solve the problem?
8x + 3x = 5 (20)
8x + 3 (20) = 5 (x + 20)
8x + 3 (20 - x) = 5 (20)
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