A grocer wants to make a 10-pound mixture of peanuts and cashews that he can sell for $4.75 per pound. If peanuts cost $4.00 per
pound and cashews cost $6.50 per pound, how many pounds of each should he use? Let p = pounds of peanuts and let c = pounds of cashews. Write a system of equations that could be used to solve the problem.
1/3 x - 1/2 = 18 1/2 1/3 x = 19 (add 1/2 on the right side to 18 1/2) x = 57 (multiply the reciprocal of 1/3 and that will be 3/1 or 3 to 19 to get x by itself) So, the answer is x = 57 (d. 57)