Jasmine B.
asked 01/15/15
Find the cost per ounce of a sunscreen made from 130 oz of lotion that cost $3.43 per ounce and 70 oz of lotion that cost $14.23 per ounce.
Mark M.
answered 01/15/15
Mathematics Teacher - NCLB Highly Qualified
130 ($3.43) = $445.90
70 ($14.23) = $996.10
Cost of 200 oz is $1442.
Cost per ounce is $1442 / 200 = $7.21
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