A gallon of milk costs $3.00. If there are 128 ounces = 1 gallon ,how much money does an 8 ounce glass of milk cost?
128/3 = 8/x
To calculate the cost of an 8 ounce glass of milk, we can use a proportion to find the cost per ounce.
1 gallon = 128 ounces
Cost of 1 gallon = $3.00
So, we can set up the proportion:
Cost of 1 gallon / 128 ounces = Cost of 8 ounces / 8 ounces
This can be simplified to:
Cost of 1 gallon / 128 = Cost of 8 ounces / 8
To find the cost of 8 ounces, we can cross-multiply and solve for the unknown:
128 * (Cost of 8 ounces) = 8 * (Cost of 1 gallon)
Cross-multiplying gives us:
128 * (Cost of 8 ounces) = 8 * $3.00
Simplifying further:
128 * (Cost of 8 ounces) = $24.00
Now, we can solve for the cost of 8 ounces:
Cost of 8 ounces = $24.00 / 128
Calculating this gives us:
Cost of 8 ounces = $0.1875
Therefore, an 8 ounce glass of milk would cost approximately $0.19.