III. Read the questions carefully. Write the letter of your answer.
1. If 20% of 50 is 10, which of the following is the base?
A. 20%
B. 50
C. 10
2. If 6 is 30% of 20, which of the following is the rate?
A. 6
B. 30%
C. 20
3. What is 9% of 200?
A. 180
B. 18
C. 1.8
4. What percent of 1400 is 504?
A. 36%
B. 48%
C. 54%
5. Two hundred is 20% of what number?
A. 40
B. 100
C. 1,000​