Problema Solution
Find the cost per ounce of a sunscreen made from 100 oz of lotion that cost $3.46 per ounce and 80 oz of lotion that cost $12.10 per ounce.
Answer provided by our tutors
The total amount of the sunscreen made is:
100 + 80 = 180 oz
The total cost of the 180 oz sunscreen made is:
100*3.46 + 80*12.10 = $1,314
The cost per ounce of a sunscreen made is:
$1,314 : 180 oz = $7.30 per ounce.