PRACTICE
- What percent of 10 is 3?
- 15 is what percent of 120?
- 8 is what percent of 40?
- What percent of 80 is 32?
- What percent of 75 is 50?
ANSWERS
- 30%
- 12.5%
- 20%
- 40%
- 66.6%
TYPE 3 FINDING THE BASE
Type 3 problems can be stated as follows:
‘‘16 is 20% of what number?’’
‘‘20% of what number is 16?’’In type 3 problems, you are given the rate and the part, and you are asked
to find the base. From the circle: B¼RP(see Fig. 6-9).
EXAMPLE
42% of what number is 294?
SOLUTION
Draw the circle and place 42 in the percent section and 294 in the ‘‘is’’ section
(see Fig. 6-10).
CHAPTER 6 Percent 117
Fig. 6-9.