Percent Application

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the difference between the estimated value and the actual value.

Front

How do you calculate percent error?

Back

Percent Error = |(Estimated Value - Actual Value)| / Actual Value x 100%.

Front

If a store sold 45 items and wants to increase sales by 20%, how do you find the new sales goal?

Back

New Sales Goal = Original Sales + (Original Sales x Percent Increase). For 45 items, it would be 45 + (45 x 0.20) = 54 items.

Front

What is the formula to calculate sales tax?

Back

Sales Tax = Price of Item x Tax Rate.

Front

If a TV costs $899 and the tax rate is 6.5%, how much tax do you pay?

Back

Tax = $899 x 0.065 = $58.43.

Front

How do you calculate the percentage of correct answers on a test?

Back

Percentage Correct = (Number of Correct Answers / Total Number of Questions) x 100%.

Front

If Albert got 76 problems right out of 95, what percentage did he get right?

Back

Percentage = (76 / 95) x 100% = 80%.

Front

What is a discount percentage?

Back

A discount percentage is the reduction in price expressed as a percentage of the original price.

Front

How do you calculate the sale price after a discount?

Back

Sale Price = Original Price - (Original Price x Discount Percentage).

Front

If a scooter's regular price is $65.50 and it's on sale for $52.40, how do you find the discount percentage?

Back

Discount Percentage = [(Original Price - Sale Price) / Original Price] x 100%. For this scooter, it's [(65.50 - 52.40) / 65.50] x 100% = 20%.