Answer:
The unit price per ounce in dollars is $0.20
Step-by-step explanation:
To solve this problem we have to divide the total amount of dollars by the total amount of ounces
$15.78 / 78.5 = $0.2010191083
Round to the neares cent
$0.2010191083 = $0.20
The unit price per ounce in dollars is $0.20