Percent of Change Concepts

This video tutorial covers the concept of percent of change, explaining how to determine whether a value has increased or decreased and by what percentage. The instructor introduces the formula for calculating percent change, which involves finding the difference between two values and dividing by the original value. Several example problems are solved to illustrate the process, and additional practice problems are provided for further learning. The video concludes with a summary of key points.

What is the primary focus of the video tutorial?

• Percent of change

• Basic arithmetic operations

• Advanced algebra

• Tax and discount calculations

What does the term 'ratio' refer to in the context of percent of change?

• An addition of two numbers

• A subtraction of two numbers

• A division of two numbers

• A multiplication of two numbers

How is the percent of change calculated?

• Difference divided by the original value

• Product of the original and new values

• Sum of the original and new values

• Original value divided by the difference

In the shirt price example, what was the original price?

• $16

• $12

• $18

• $10

What was the percent increase in the shirt price example?

• 25%

• 33.3%

• 50%

• 20%

In the gasoline price example, what was the original price per gallon?

• $2.35

• $2.48

• $2.50

• $2.30

What was the percent increase in the gasoline price example?

• 5.5%

• 10%

• 7.5%

• 3.5%

In the headphone price example, what was the original price?

• $80

• $90

• $100

• $84

What was the percent decrease in the headphone price example?

• 20%

• 25%

• 16%

• 10%

In the jeans price example, what was the original price?

• $36

• $40

• $42

• $38