Percentage Calculations and Applications

Mr. Reeves guides students through module 5, focusing on percents and problem-solving. The video covers percent increase and decrease, rewriting percent expressions, and real-world applications. Students learn to calculate percent changes, apply markups and markdowns, and solve practical problems involving percents.

What is the formula to calculate the percent change?

• Percent change = (original amount / change in amount) * 100

• Percent change = (change in amount / original amount) * 100

• Percent change = (change in amount + original amount) * 100

• Percent change = (original amount - change in amount) * 100

If an item's price increases from $50 to $65, what is the percent increase?

• 30%

• 25%

• 20%

• 15%

How do you convert a percentage to a decimal for calculations?

• Move the decimal point two places to the right

• Move the decimal point two places to the left

• Divide the percentage by 10

• Add 100 to the percentage

If an item is marked up by 15% from its original price of $60, what is the new price?

• $75

• $70

• $69

• $66

Meiling earns a weekly salary of $325 plus a 6.5% commission on sales. If she sells $4800, what is her total earnings for the week?

• $637

• $325

• $480

• $800

What percent of Raymond's earnings is spent on electricity if he earns $1735 and pays $53.10 for electricity?

• 4%

• 2.5%

• 5%

• 3.1%

If Priya makes 20% more than James, who earns $7 per hour, how much does Priya earn per hour?

• $9.00

• $8.40

• $8.00

• $7.20

Siobhan makes 5% less than Priya, who earns $8.40 per hour. How much does Siobhan earn per hour?

• $7.50

• $8.20

• $7.98

• $8.00

The Who family goes out for lunch, and the meal costs $45. With a 6% sales tax and a 20% tip, what is the total cost of the meal?

• $55.00

• $56.70

• $50.00

• $60.00

What is the total percentage increase when a meal's cost includes a 6% tax and a 20% tip?

• 30%

• 20%

• 25%

• 26%