Answer:
16
Step-by-step explanation:
5-4 = 1 so total profit would be $1 for each bag.
Because he makes 1 dollar per bag this is a fairly simple to see how many he has but we will pretend its not so you have an idea of how to do this later.
You should divide the final profit he's made by the total he gets per each, which would give you how many he has made.
$16/$1 = 16 bags produced.