Percent Error and Multipliers

Front

What is Percent Error?

Back

Percent Error is a measure of how inaccurate a measurement is, expressed as a percentage of the actual value. It is calculated using the formula: Percent Error = (|Estimated Value - Actual Value| / Actual Value) x 100.

Front

How do you calculate speed in miles per hour?

Back

Speed in miles per hour (mph) is calculated by dividing the distance traveled (in miles) by the time taken (in hours). Formula: Speed = Distance / Time.

Front

What does a 25% increase mean?

Back

A 25% increase means that the new amount is 125% of the original amount. To calculate the new amount, multiply the original amount by 1.25.

Front

How do you calculate the tip percentage?

Back

To calculate the tip percentage, divide the tip amount by the total bill amount and multiply by 100. Formula: Tip Percentage = (Tip Amount / Total Bill) x 100.

Front

What is a markup?

Back

A markup is an increase in the price of a product, usually expressed as a percentage of the original price. It is added to the cost price to determine the selling price.

Front

How do you find the new price after a markup?

Back

To find the new price after a markup, multiply the original price by (1 + markup percentage). Formula: New Price = Original Price x (1 + Markup Percentage).

Front

What is the formula for calculating percent increase?

Back

Percent Increase = ((New Value - Original Value) / Original Value) x 100.

Front

What is the formula for calculating percent decrease?

Back

Percent Decrease = ((Original Value - New Value) / Original Value) x 100.

Front

If a scale has a 10% error under the actual weight, how do you find the measured weight?

Back

To find the measured weight, multiply the actual weight by (1 - error percentage). Formula: Measured Weight = Actual Weight x (1 - Error Percentage).

Front

What is the relationship between distance, speed, and time?

Back

The relationship is defined by the formula: Distance = Speed x Time. This means that distance traveled is equal to speed multiplied by the time taken.