Help me please with math. I have a photo of the question. Me and my friends are confused! Help appreciated!!

Help me please with math I have a photo of the question Me and my friends are confused Help appreciated class=

Respuesta :

first do 10.65 - 4.25
so 6.4
then multiply 4 by 16 to find the ounces
so 64
then divide 6.4 by 64
so .1
they were charged 10 cents per ounce
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