At the grocery store, one brand of ice cream costs $4.50 for 48 ounces. The same brand costs $7 for 128 ounces or $3 for 64 ounces. Which size has the lower unit price?
A 48
B they cost the same per ounce.
C 128
D 64
To find the unit price, we need to divide the cost by the number of ounces.
For the 48-ounce ice cream: $4.50 ÷ 48 = $0.09375 per ounce.
For the 128-ounce ice cream: $7 ÷ 128 = $0.0546875 per ounce.
For the 64-ounce ice cream: $3 ÷ 64 = $0.046875 per ounce.
Comparing the unit prices, the 64-ounce size has the lower unit price.
Therefore, the answer is D) 64.