Price chopper pies to 50 pounds of walnuts and pecans for the holiday season At a cost of $1200. If pecans cost six dollars per pound and walnuts cost four dollars per pound how many pounds of walnuts did they buy?

Step-by-step explanation:

Let x and y denote the number of walnut and pecan respectively.

Mass of walnut and pecan:

x + y = 250 pounds

y = $6/pound

x = $4/pound

Cost of walnut and pecan:

4x + 6y = $1200

Solving both equations simultaneously,

x = 250 - y

4(250 - y) + 6y = 1200

2y = 1200 - 1000

y = 200/2

= 100 pounds

x = 250 - 100

= 150 pounds

150 pounds of walnut was purchased.

step-by-step explanation: