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?(1 point)

Responses

64 ounces
64 ounces

They cost the same per ounce.
They cost the same per ounce.

48 ounces
48 ounces

128 ounces
128 ounces

1 answer

To determine which size of ice cream has the lower unit price, we can calculate the price per ounce for each option.

  1. 48 ounces for $4.50: \[ \text{Unit price} = \frac{$4.50}{48 \text{ ounces}} = $0.09375 \text{ per ounce} \]

  2. 64 ounces for $3: \[ \text{Unit price} = \frac{$3}{64 \text{ ounces}} = $0.046875 \text{ per ounce} \]

  3. 128 ounces for $7: \[ \text{Unit price} = \frac{$7}{128 \text{ ounces}} = $0.0546875 \text{ per ounce} \]

Now, let's compare the unit prices:

  • 48 ounces: $0.09375 per ounce
  • 64 ounces: $0.046875 per ounce
  • 128 ounces: $0.0546875 per ounce

The 64-ounce size has the lowest unit price at approximately $0.046875 per ounce.

Therefore, the answer is: 64 ounces.