LESSON 5 Solving Word Problems Using Percents
If you need to review percents, complete Refresher III.A percent problem consists of three values. The base (B) is the whole or total,
the rate (R) is a percent, and the part (P). One of these three will be unknown.
For example, if a box contains 12 calculators, then the whole is 12. If
three calculators are placed on a store’s shelf, then 3 is the part. Finally, the
percent is 123 ¼^14 ¼ 25 %. That is, 25% of the calculators were placed on the
store’s shelf.
Percent problems can be solved using the circle method. Figure 5-1 shows
how to use the circle method to solve percent problems.
43
Copyright © 2005 by The McGraw-Hill Companies, Inc. Click here for terms of use.