Word problem

Question

A restaurant sells drinks in 3 sizes of cups: small, medium, and large. The small cup costs $.89 and holds 9 ounces. The medium cup costs $1.29 and holds 12 ounces. The large cup costs $1.59 and holds 15 ounces. Which size cup costs the least per ounce?

Answer 1

Small cup per ounce costs =0.89/9

                                       =0.0988 $

 

medium cup per ounce costs = 1.29/12

                                          =0.1075  $

 

Large cup per ounce costs = 1.59/15

                                       =0.106. $

 

Small cup costs least