Question

Dylan needs to buy new contact lenses. His ophthalmologist sells 16 lenses for $64 and 40 lenses for $120. Which is better?

Answer 1

so the best one to buy is 40 contact lens for $120

Explanation:

64/16= 4 dollars per lens

120/40= 3 dollars per lens

Answer 2

The better unit rate deal is 40 lenses for 120 dollars.

Explanation:

64/16 = 4 while 120/40 = 3