Calculating Discounts and Percentages

This video tutorial covers solving multi-step percent problems, including discounts, profits, and original price calculations. It provides examples such as calculating discounts on daffodil bulbs, profits from homemade jams, and original prices of jeans and lamps. The tutorial also explains layaway payments, employee layoffs, and coupon discounts. The video emphasizes the importance of understanding each step in solving percent problems and prepares viewers for the next lesson on using calculators for percentage problems.

What is the first step in solving multi-step percent problems?

• Ignore unnecessary information

• Guess the answer

• Use a calculator immediately

• Read the problem statement carefully

What does the formula I = PRT stand for?

• Interest = Principal / Rate / Time

• Interest = Principal + Rate + Time

• Interest = Principal x Rate x Time

• Interest = Principal - Rate - Time

If a product is sold at a 20% discount, what percentage of the original price is the final cost?

• 20%

• 80%

• 100%

• 60%

Tala bought daffodil bulbs at a 15% discount. What is the first step to find the final price?

• Add 15% to the original price

• Multiply the original price by 0.85

• Multiply the original price by 0.15

• Subtract 15% from the original price

Dave wants to make a 40% profit on his homemade jam. What should he do?

• Divide the cost price by 0.4

• Subtract 40% from the cost price

• Add 40% to the cost price

• Multiply the cost price by 0.4

A pair of jeans is marked down by 25% to $44.99. How do you find the original price?

• Divide $44.99 by 0.75

• Multiply $44.99 by 0.25

• Subtract $44.99 from 100%

• Add $44.99 to 25%

A lamp costs $54 after a 40% discount. What is the original price?

• Subtract $54 from 100%

• Add $54 to 40%

• Divide $54 by 0.6

• Multiply $54 by 0.4

Lisa put $480 of clothes on layaway and paid 10% as a down payment. How do you find the amount of each monthly payment?

• Multiply $480 by 0.9 and divide by 6

• Divide $480 by 10

• Multiply $480 by 0.1 and subtract from $480, then divide by 6

• Add 10% to $480 and divide by 6

ABC Company laid off 10% of employees in June and another 10% in August. How do you calculate the total number of employees laid off?

• Divide the total by 0.8

• Subtract 10% from the total, then subtract 10% from the new total

• Add 10% and 10% and subtract from the total

• Multiply the total by 0.2

A shirt is on sale for 10% off, and you have a 20% off coupon. How do you calculate the final price?

• Divide the original price by 0.7

• Subtract 10% from the original price, then subtract 20% from the new price

• Multiply the original price by 0.7

• Add 10% and 20% and subtract from the original price