Find the cost per ounce of a sunscreen made from 20 oz of a lotion that costs $2.25 per ounce and 50 oz of a lotion that costs $3.55 per ounce.
A) $2.85 per oz
B) $3.18 per oz
C) $3.85 per oz
D) $2.18 per oz
E) $5.18 per oz

Question

Quizplus · Accepted Answer

To find the cost per ounce of the sunscreen, we need to first find the total cost of the lotions used.

The cost of the first lotion (20 oz at $2.25 per oz) is:

20 oz x $2.25/oz = $45

The cost of the second lotion (50 oz at $3.55 per oz) is:

50 oz x $3.55/oz = $177.50

The total cost of the two lotions is:

$45 + $177.50 = $222.50

To find the cost per ounce, we divide the total cost by the total number of ounces:

$222.50 / (20 oz + 50 oz) = $222.50 / 70 oz = $3.18/oz

Therefore, the cost per ounce of the sunscreen is $3.18/oz, so the best choice is B.

Find the Cost Per Ounce of a Sunscreen Made from 20