Percent Proportion Flashcard

Front

What is the formula to calculate the discount price?

Back

Discount Price = Original Price - (Original Price × Discount Rate)

Front

How do you calculate simple interest?

Back

Simple Interest = Principal × Rate × Time

Front

What is a tip and how is it calculated?

Back

A tip is a percentage of the total bill given for service. Tip = Total Bill × Tip Rate.

Front

How do you find what percent one number is of another?

Back

Percent = (Part / Whole) × 100

Front

What does a 100% increase mean?

Back

A 100% increase means the new value is double the original value.

Front

If an item costs $50 and is on sale for $40, what is the discount percentage?

Back

Discount Percentage = [(Original Price - Sale Price) / Original Price] × 100 = 20%.

Front

What is the relationship between percentage and fractions?

Back

Percentage is a fraction out of 100. For example, 25% = 25/100 = 1/4.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 25% = 0.25.

Front

What is the total cost if a meal costs $45 and a 15% tip is added?

Back

Total Cost = Meal Cost + (Meal Cost × Tip Rate) = $45 + ($45 × 0.15) = $51.75.

Front

If the original price of an item is $80 and it is marked down by 25%, what is the sale price?

Back

Sale Price = Original Price - (Original Price × Discount Rate) = $80 - ($80 × 0.25) = $60.