Posted by Kamya on .
Which choice offers the lowest cost per ounce? 6oz for 42 cents? 8oz for 64 cents? or 4oz for 36 cents? This is 5th grade math assignment?

math 
Reiny,
42 cents/6 oz = ...
64 cents/8 oz = ...
36 cents/4 oz = ...
which answer is the lowest?