Percentage Calculations and Discounts

This video tutorial from Mumu Math covers solving word problems involving percentages. It includes examples such as calculating the percentage of students who failed a test, determining the number of incorrect answers on a math test, finding the percentage of female students in a class, and calculating the original price of a dress after a discount. The video emphasizes identifying key information and using part-over-whole calculations to solve these problems.

If 30 students took a test and only 5 passed, what percentage of students failed?

• 75%

• 83%

• 16%

• 50%

If 25 students failed out of 30, what is the percentage of students who passed?

• 83%

• 50%

• 25%

• 17%

If 5 students passed a test out of 30, how many students failed?

• 25

• 5

• 10

• 20

Drew scored 80% on a test with 200 questions. How many questions did he answer incorrectly?

• 80

• 60

• 40

• 20

Drew answered 160 questions correctly on a 200-question test. What percentage did he get right?

• 60%

• 90%

• 80%

• 70%

If Drew got 20% of the questions wrong on a 200-question test, how many did he get right?

• 180

• 120

• 140

• 160

In a class of 30 students, 20 are female. What percentage of the class is female?

• 67%

• 50%

• 60%

• 70%

If 10 students in a class of 30 are male, what percentage of the class is male?

• 33%

• 50%

• 67%

• 75%

Kate bought a dress at 85% of its regular price and paid $20. What was the original price?

• $23.53

• $25.00

• $30.00

• $35.29

A dress is sold at 85% of its original price for $20. What percentage of the original price is the discount?

• 10%

• 15%

• 20%

• 25%