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?
A. 8x + 3x = 5(20)
B. 8x + 3(20) = 5(x + 20)
C. 8x + 3(20 - x) = 5(20)
 put the amount of $8 a pound chocolate as say it as x  As the total number of pounds is 20 so the amount of $3 a pound chocolate must be 20−x so it will be. 8x + 3(20 - x) = 5(20) so correct option is C hope it helps
