Unit Rates.. But trying to find the unit cost..

$2.00/64

$7.50/256
My answer for the first one is 32.
Not sure about the second one .

2 answers

.03125 or 3.125%
0.029296875 0r 2.93%
micaela spent $60 on batteries if the cost $6 a pack how many packs did she buy