Calculate Discounts

Recall that there are 3 general types of percent problems which you'll often encounter.

Calculating discounts involves finding the part.

P = W•R where P is the part, W is the whole, and R is the Rate.

The discount or amount of discount is the product of the original price (the whole, W) and the discount rate (R).

Let's look at an example problem. Find the discount for a sweater that is 20% off. If the original price is $80, what is the discount?

Substituting into the equation P = WR, we get P = ($80)(20%) = $80(.2) = $16.

Now try it on your own!

The net price (sale price) is the original price minus the discount.