One fifth of the members of a senior citizens club signed up for a computer workshop. What percent of the club did not sign up for the workshop?

Hello!

First, we must convert 1/5 to a decimal by dividing the numerator by the denominator, and then we will convert the decimal to a percentage by multiplying the decimal by 100. Finally, we will subtract that percentage from 100%.

I know that's a lot to take in! : D

1 : 5 = 0.2

0.2 * 100 = 20%

100% - 20%

We can double check by converting 4/5 to a percentage:

4 : 5 = 0.8

0.8 * 100 = 80%

That means we're right!

Your answer is:

80% of the club did NOT sign up for the workshop!