Understanding Percent Equations

What is the key difference between a percent proportion and a percent equation?

• Percent proportion uses decimals, while percent equation uses whole numbers.

• Percent proportion is more accurate than percent equation.

• Percent proportion uses whole numbers, while percent equation uses decimals.

• Percent proportion is used for taxes, while percent equation is not.

How do you convert 8.8% into a decimal for use in a percent equation?

• 8.8

• 0.088

• 0.88

• 0.0088

If 20 is what percent of 25, what is the correct percentage?

• 80%

• 8%

• 0.8%

• 20%

What is the result of dividing 84 by 0.16 in a percent equation?

• 0.525

• 5.25

• 52.5

• 525

Chad wants to buy a cell phone for $180 with a 7% sales tax. What is the total cost?

• $192.60

• $190.00

• $187.60

• $180.60

Which method can be used to find the total cost including tax?

• Add the tax to the original price, then multiply by 100.

• Multiply the original price by the tax rate, then add to the original price.

• Divide the original price by the tax rate, then add to the original price.

• Subtract the tax from the original price, then multiply by 100.

What is the total percentage of a product if the original price is 100% and the tax is 7%?

• 107%

• 100%

• 97%

• 7%

Mr. Wilkins bought a DVD player for $97.19 including tax. If the sticker price was $89.99, what was the sales tax percentage?

• 7%

• 8%

• 9%

• 10%

How do you calculate the sales tax percentage using the total cost and sticker price?

• Multiply the total cost by the sticker price.

• Subtract the sticker price from the total cost, then divide by the sticker price.

• Add the sticker price to the total cost, then divide by the total cost.

• Divide the sticker price by the total cost.

If a product costs $89.99 and the total cost with tax is $97.19, what is the tax amount?

• $7.20

• $8.20

• $6.20

• $9.20