Question

Joe bought some CD's and DVD's at the store.

• He bought a total of 12 items.
• The CD's were $14.
• The DVD's were $22.
• He spent $200.
How many of each did he buy?

Answer 1

Answer: x=8 and y=4

Explanation:

x+y=12 x=12-y x=12-4

14x+22y=200 x=8

14(12-y)+22y=200

168-14y+22y=200

-168 -168

-14y+22y=32

8y=32

8y/8=32/8

y=4