A gallon of milk costs $3.80. If there are 128 ounces = 1 gallon ,how much money does an 8 ounce glass of milk cost? (Change ounces to gallons to dollars)

Each ounce: 0.02968

8 * 0.02968 = 0.24

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To find the cost of an 8 ounce glass of milk, we need to convert the amount of milk from ounces to gallons and then multiply by the cost per gallon.

Given that there are 128 ounces in 1 gallon, we can set up the following proportion:

128 ounces = $3.8
1 ounce = x dollars

To solve for x, we can cross-multiply and divide:

1 ounce * $3.8 = 128 ounces * x dollars
$3.8 = 128x
x = $3.8/128

Now, we can calculate the cost of an 8 ounce glass of milk:

8 ounces * ($3.8/128 dollars per ounce) = $0.2375

Therefore, an 8 ounce glass of milk costs $0.2375.