Understanding Percent Proportions

What is the basic formula for percent proportion?

• Whole over part equals percent over 100

• Part over whole equals percent over 100

• Percent over whole equals part over 100

• Whole over percent equals part over 100

If 20 is what percent of 25, what is the percent?

• 90%

• 80%

• 70%

• 60%

In the problem '19 is what percent of 25?', what is the percent?

• 76%

• 80%

• 88%

• 84%

What number is 8.8% of 20?

• 4.76

• 2.76

• 1.76

• 3.76

Find 38% of 22.

• 9.36

• 8.36

• 7.36

• 6.36

70 is 28% of what number?

• 275

• 250

• 225

• 200

16% of what number is 84?

• 575

• 525

• 500

• 550

What is the part in the problem '70 is 28% of what number?'

• 250

• 28

• 70

• 100

In a 9-year span, Serena Williams won 4 tournaments. What percentage of the total 18 tournaments did she win?

• 21.2%

• 20.2%

• 23.2%

• 22.2%

In the context of percent proportions, what does 'of' usually indicate?

• Variable

• Part

• Whole

• Percent