Heart Rate and Percent Change Concepts

The video tutorial explains how to calculate the percent of change and determine what percent the final amount is of the original amount. It uses Joe's heart rate as an example to demonstrate the calculations. The tutorial covers three methods: diagrams, proportions, and equations, and explains how to use each method to solve percent problems. It also clarifies that percents can exceed 100, using a pie chart analogy. The video concludes with a summary of the methods discussed.

What is the initial heart rate of Joe before running the mile?

• 80 beats per minute

• 60 beats per minute

• 70 beats per minute

• 90 beats per minute

What is the final heart rate of Joe after running the mile?

• 90 beats per minute

• 80 beats per minute

• 60 beats per minute

• 70 beats per minute

Which of the following is NOT a method to solve percent problems?

• Graphs

• Proportions

• Diagrams

• Equations

What does 125% represent in the pie chart analogy?

• 14 slices

• 10 slices

• 8 slices

• 12 slices

If the original rate is 60 beats per minute, what is the percent increase when the rate changes to 90 beats per minute using diagrams?

• 150%

• 25%

• 75%

• 50%

What is the key information needed to solve the percent change problem?

• Only the original rate

• Only the final rate

• Original rate, amount of change, final rate

• None of the above

Using proportions, what percent is 30 of 60?

• 100%

• 25%

• 50%

• 75%

What is the percent increase from the original to the final amount using equations?

• 75%

• 150%

• 25%

• 50%

What is the purpose of using cross products in solving proportions?

• To find the original amount

• To determine the percent change

• To balance the equation

• To find the final amount

What is the percent of the final rate compared to the original rate using equations?

• 150%

• 175%

• 125%

• 100%