You bought some tile that cost $4.00 per square foot and some carpet that
cost $2.00 per square foot. A total of
2500 square feet was purchased for
$6800.00. Your friend thought that
you purchased 1600 square feet of
tile, and 900 square feet of carpet.
Decide if your friend is correct. If your
friend is correct, explain why. If your
friend is not correct, explain the error
in their reasoning.