Business Mathematics Brief 12th Edition by Stanley Salzman ,Gary Clendenen, Charles Miller

Exercise 17

Using complements (with respect to 1) of the single discounts, find the net cost equivalents for the following discounts. Do not round. (See Examples.)
Using Complements to Find the Net Cost

Kitchen Crafters is offered a series discount of 20/10 on a George Foreman Grilling Machine with a list price of $180. Find the net cost after the series discount.
SOLUTION
Apply the preceding steps to find the net cost after the discount.

To find the actual discount, subtract the net cost after discount from the original price.

On many calculators, you can subtract the discount percents from the list price in a series calculation.

Note : Refer to Appendix B for calculator basics.
Using Complements to Solve Series Discounts

The list price of a Heartland 30-inch combination gas and electric stove is $3095. Find the net cost after a series discount of 20/10/10.
SOLUTION
Start by finding the complements with respect to 1 of each discount.

25/10/20/10 __________