Exploring Percent Proportion Concepts

The video tutorial covers the concept of percent proportion, explaining how percent represents a part per hundred. It introduces the percent proportion formula and demonstrates solving for unknown values such as part, whole, or percent using examples involving pizza slices. The tutorial also presents an alternative method, 'is over of', for solving percent problems and provides several examples. The video concludes with a summary of the key concepts and methods discussed.

What does the term 'percent' signify in the context of percent proportion?

• A ratio out of 1000

• A variable value

• A constant value of 100

• A ratio out of 100

If 3 slices of a 12-slice pizza are eaten, what percentage of the pizza is left?

• 50%

• 25%

• 33.33%

• 75%

How many slices of an 8-slice pizza are left if 50% has been eaten?

• 2 slices

• 6 slices

• 4 slices

• 3 slices

If Jack ate 5 slices of pizza and it constituted 20% of the total, how many slices were on the pizza?

• 20 slices

• 15 slices

• 25 slices

• 30 slices

What is 60% of 150?

• 60

• 100

• 90

• 75

In the formula 'is over of equals percent over 100', what does 'of' represent?

• The part

• The whole

• The unknown variable

• The percentage

What is the unknown in the problem '17 is what percent of 20'?

• The ratio

• The whole

• The part

• The percentage

If 7 is 20% of a number, what is the number?

• 35

• 40

• 45

• 50

What does cross multiplication help to solve in percent proportion problems?

• To find the total number

• To find the percentage

• To calculate the ratio

• To solve for the unknown variable

What is the first step in setting up a percent proportion problem?

• Divide by 100

• Set up the proportion 'is over of equals percent over 100'

• Cross multiply

• Identify the variable