Question

a gallon of milk costs $3.80 .if there are 128 ounces = 1 gallon ,how much money does an 8 ounce of milk cost?

Answer 1

We have 128 ounces = 1 gallon ⇒ 1 ounce = 1/128 gallon
                                                   ⇒ 8 ounces = 1/16 gallon
So 1/16 × $3.80 = $ 0.2375 ⇒ 8 ounces of milk costs $ 0.2375