Percent Increase and Decrease Problems

This video tutorial by Kirk Weiler covers percent increase and decrease, providing examples and exercises to illustrate these concepts. It begins with an introduction to the topic, followed by exercises that demonstrate how to calculate percent increase and decrease in various scenarios. The video concludes with a summary of the importance of understanding percent calculations.

What is the main focus of this lesson on percent increase and decrease?

• Only percent increase

• Messy percentages

• Only percent decrease

• Simple percentages

Ruth's weekly pay is $750 and will increase by 12%. How much will her pay increase?

• $100

• $90

• $110

• $80

After a 12% increase, what will Ruth's new weekly pay be?

• $850

• $840

• $830

• $820

A pool starts with 13,500 gallons of water and decreases by 23%. How many gallons is this decrease?

• 3,105 gallons

• 3,205 gallons

• 3,305 gallons

• 3,405 gallons

After a 23% decrease, what is the new volume of water in the pool?

• 10,295 gallons

• 10,395 gallons

• 10,495 gallons

• 10,595 gallons

Linden Middle School has 480 students, increasing by 5% next year. How many students will there be?

• 512 students

• 500 students

• 504 students

• 508 students

A sweater originally priced at $85 is marked 14% off. What is the sale price?

• $75.10

• $74.10

• $73.10

• $72.10

Antonio's hourly wage increases from $24 to $27. What percent increase is this?

• 10.5%

• 11.5%

• 12.5%

• 13.5%

Lacey's salary increased from $13 to $17 per hour. What is the percent increase?

• 30.5%

• 30.8%

• 31.2%

• 31.0%

Gloria's car payment increased from $240 to $275. What is the percent increase?

• 15.6%

• 14.6%

• 16.6%

• 17.6%