Answer:
a = 8, b = 20, c = 40%, answer = 40% of 20 is 8
Step-by-step explanation:
c is the percent, which is given, 40%
b is the whole, which is also given, 20
a is what you have to solve for:

Do a = (40 x 20)/100 = 8
The answer to the question is the <u>part,</u> or a.
Hope this helps!