Math Note: Always change the percent to a decimal or fraction
before multiplying or dividing.PRACTICE
- Find 50% of 90.
- Find 24% of 16.
- What is 48% of 125?
- 62.5% of 32 is what number?
- Find 16% of 230.
ANSWERS
- 45
- 3.84
- 60
- 20
- 36.8
TYPE 2 FINDING THE RATE
Type 2 problems can be stated as follows:
‘‘What percent of 16 is 10?’’
‘‘10 is what percent of 16?’’In type 2 problems, you are given the base and the part and are asked to
find the rate or percent. The formula is R¼BP. In this case, divide the part by
the base and then change the answer to a percent (see Fig. 6-6).
CHAPTER 6 Percent 115
Fig. 6-6.