Calculating Percent Changes and Amounts

The video tutorial guides viewers through calculating percent increases and decreases using examples. It covers how to find new amounts after a percent change and explains the process of determining percent change. The tutorial uses practical examples to illustrate each concept, ensuring a clear understanding of the mathematical procedures involved.

What is the percent increase when a value changes from 5 to 8?

• 50%

• 40%

• 60%

• 70%

If the number of students increases from 20 to 30, what is the percent increase?

• 50%

• 25%

• 100%

• 75%

How do you calculate the percent increase from 150 to 86?

• Subtract 150 from 86 and divide by 86

• Subtract 150 from 86 and divide by 150

• Subtract 86 from 150 and divide by 150

• Subtract 86 from 150 and divide by 86

What is the percent decrease when a value changes from 80 to 64?

• 15%

• 20%

• 10%

• 25%

If a value decreases from 95 to 68, what is the percent decrease?

• 28%

• 32%

• 34%

• 30%

How do you find the new amount after a 10% increase on $9?

• $10.10

• $10.00

• $9.10

• $9.90

What is the new amount after a 25% decrease on $48?

• $42

• $40

• $38

• $36

How do you calculate the new amount after a 20% decrease on 340 pages?

• Subtract 68 from 340

• Subtract 74 from 340

• Subtract 70 from 340

• Subtract 72 from 340

What is the new amount after a 50% increase on 28 members?

• 42

• 38

• 44

• 40

What is the process to find the percent change of a quantity?

• Multiply the change by the original amount

• Divide the change by the original amount

• Subtract the change from the original amount

• Add the change to the original amount