Question

A cafeteria charges a fixed price per ounce for the salad bar. A sandwich costs $3.10, and a drink costs $1.75. If a 7-ounce salad and a drink cost the same as a 4-ounce salad and a sand which, how much does the salad cost per ounce?

Answer 1

3.10-1.75= 1.35/3= 0.45
$0.45 per ounce