Using complements (with respect to 1) of the single discounts, find the net cost equivalent for the discount 20/5.

i can't see the picture : /

step-by-step explanation:

ok one would be money, and the other would be refreshments or something similar. if each bag of popcorn is 5.00 and each drink is half of that that means drinks are 2.50 the proper way to do that would to look and see how much of each you can buy without exceeding a limit of 30.00