Answer:
$10.48
Step-by-step explanation:
So what you do is, you divide the cost of the masks, by how many there are, and you get a set of numbers, then you have to find the average of those numbers.
When you divide you get these numbers:
75 / 6 = 12.5
88 / 8 = 11
101 / 10 = 10.1
166 / 20 = 8.3
You then need to find the average of them, so you add all of them together and divide by 4 since there are 4 numbers.
And you get 10.475, you round up since you can't have half of a penny.
