Percent Expressions

Front

What is the formula to calculate the total amount paid including a tip?

Back

Total amount paid = Original amount (p) + Tip (20% of p) = 1.2p.

Front

How do you calculate a final price after applying a discount?

Back

Final price = Original price (P) - Discount (30% of P) = 0.70P.

Front

What does a 40% markup on a cost price mean?

Back

A 40% markup means the selling price is 140% of the cost price.

Front

If an item costs c dollars and is sold at a 40% markup, what is the selling price?

Back

Selling price = 1.4c.

Front

What is the percentage formula for calculating a tip?

Back

Tip = Percentage (as a decimal) × Original amount.

Front

How do you convert a percentage to a decimal?

Back

Divide the percentage by 100.

Front

What is the relationship between discounts and final prices?

Back

Final price = Original price × (1 - Discount rate).

Front

How can you express a 20% tip as a decimal?

Back

20% as a decimal is 0.20.

Front

What is the formula for calculating the amount of a discount?

Back

Discount amount = Discount rate × Original price.

Front

How do you find the original price if you know the final price and the discount rate?

Back

Original price = Final price / (1 - Discount rate).