Problems on percentages:

Practice problems on percentages.

1. What is 81 percent of 70 ?

2. What is 95 percent of 50 ?

3. What percent of 72 is  35 ?

4. 92 is 70 percent of what ?

5. $22 is 12 percent of what number ?

6. If the price of a mobile phone changes from 110 to 

   145. Calculate the percent change ?

7. A test has 20 questions. If peter gets 60% correct, 

   how many questions did peter miss?

8. In a school, 20% of the teachers teach basic math. If 

    there are 25 basic math teachers, how many teachers

   are there in the school?

9. 22 students in a class took an algebra test. If 15 

    students passed the test, what percent do not pass?

10. In a class 60% of the students are girls. If the total 

   number of students is 30, what is the number of boys?

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