Percent Equations

50% of x is 25

• x = 50

• x = 12.5

80% of c is 20. What is c?

• 0.80c = 20

• 0.80(20) = c

90 is 120% of what number?

• 108

• 75

• 118

• 55

What number is 20% of 45?

• 9

• 90

• 4.4

• 7

Your friend paid $17 for a shirt. This amount was 85% of the total amount your friend spent while shopping. How much money did your friend spend?

• $25

• $20

• $85

• $65

Write 3/16 as a percent.

• 15.5%

• 18.75%

• 19.5%

• 17.25%

Determine if you are finding the part, percent, or whole.  
What is 20% of 60?

• Part

• Percent

• Whole

Determine if you are finding the part, percent, or whole.  
18 is what percent of 36?

• Part

• Percent

• Whole

5 student in class want to have extra homework. If 20% of the student want extra homework, how many total students are in the class?

• 25 students

• 30 students

• 20 students

• 15 students

What is 30% of 80?

• 30

• 24

• 2.4

• 56