Percent Problems and Proportions

This video tutorial explains how to solve percent problems using the proportion method. It covers various examples, including cases where the percent is greater than 100% or less than 1%. The tutorial demonstrates setting up proportions and solving them using logic or algebra, including cross multiplication. It also highlights the importance of understanding the relationship between the part, whole, and percent.

What is 50% of 18?

• 27

• 9

• 36

• 18

Which of the following is an example of a percentage greater than 100%?

• 2% of 40

• 125% of 60

• 60% of 800

• 50% of 18

What is the result of 60% of 800?

• 400

• 480

• 360

• 500

What is the term used for the number we are taking a percent of?

• Percent

• Fraction

• Whole

• Part

In the proportion method, what does the equation 'part over whole equals percent over 100' represent?

• A way to find the whole

• A way to find the part

• A way to find the percent

• A way to solve percent problems

What is the first step in solving a percent problem using the proportion method?

• Guess the answer

• Convert percent to decimal

• Set up the proportion

• Cross multiply

What does a percentage less than 100% indicate?

• Exactly all of it

• Less than all of it

• None of it

• More than all of it

What is the term for the result of a percent calculation?

• Percent

• Fraction

• Part

• Whole

What is 25% of 80 using the proportion method?

• 30

• 25

• 20

• 15

What is the proportion set up for finding 25% of 80?

• 100/X = 80/25

• 80/X = 25/100

• X/100 = 25/80

• X/80 = 25/100