The tape diagram representing the problem is added as an attachment
How to draw a tape diagram representing the problem.
From the question, we have the following parameters that can be used in our computation:
Each student = $3
Number of students = 5
Total amount collected = $20
Using the above as a guide, we have the following:
Total amount collected = Supplies + Each student * Number of students
So, we have
20 = Supplies + 3 * 5
20 = Supplies + 15
Evaluate
Supplies = 5
The tape diagram representing the problem is added as an attachment