Question

WHY CAN'T ANYONE HELP ME: ( Two computer disks and three notebooks cost ​$29. ​However, five computer disks and four notebooks cost ​$48. Find the price of each.

Answer 1

Disks = $4 each and Notebooks = $7 each

Explanation:

-4(2D + 3N = 29)

3(5D + 4N = 48)

-8D - 12N = -116

15D + 12N = 144

7D = 28

D = $4

2(4) + 3N = 29

8 + 3N = 29

3N = 21

N = $7