# ACT Math : Percentage

## Example Questions

### Example Question #4 : How To Find Percentage

A high school student spends a total of 90 minutes per day studying for the ACT, Monday through Friday, then 2 hours a day on the weekend.  What percent of their week is spent studying for the ACT?

6.25%

7.125%

6.8%

5.5%

8%

6.8%

Explanation:

The number of minutes in a week is:

The number of minutes spent studying is:

6.8%

### Example Question #1231 : Act Math

Above is a chart showing the students and the different activities they are involved in. What percentage of the students are on the soccer team? Round to the nearest tenth of a percent.

32.5%

40.0%

25.0%

37.5%

30.0%

37.5%

Explanation:

Percentage = Students on Soccer Team / Total Number of Students

= 3/8 = .375 = 37.5%

### Example Question #1232 : Act Math

What percentage of the students are involved in both newspaper and soccer?

15%

25%

20%

30%

35%

25%

Explanation:

There are three students involved in soccer.  Read across the chart and two of them are also involved in newspaper.

Percentage = 2/Total Number of Students

= 2/8 = .25 = 25%

### Example Question #1233 : Act Math

The average person spends 30% of their life sleeping.  Assuming the average person lives till the age of 93, how many years will they have spent asleep? Round to the nearest whole number

31 years

9 years

28 years

19 years

30 years

28 years

Explanation:

This problem requires simple arithmetic, 30% of 93 can be obtained by multiply 93 X .30 = 27.9 Rounding yields 28 years.

### Example Question #1231 : Act Math

What is 9% of 8,100?

729

459

2,700

900

836

729

Explanation:

8,100 * 0.09 = 729

### Example Question #71 : Percentage

76 eleventh-grade students turned in term papers on the United States Constitution. 3 students failed, 26 students recieved C's, 31 students recieved B's. The remaining students earned A's on their papers.

What percentage of students earned A's on their paper? (Round to the nearest percent.)

Explanation:

Subtract 3, 26, and 31 from 76 to figure out how many students got A's (16).

### Example Question #14 : Other Percentage

What is  of

Explanation:

To find the percentage of a number, convert the percentage into a decimal by diving the percent by 100.

,

then multiply that decimal by the number.

### Example Question #71 : Percentage

is what percent of ? Round to the nearest hundredth.

Explanation:

For percentage problems, the easiest way to start is by remembering that the word "of" is best translated as a multiplication, while the word "is" is best translated by an equals sign. Thus, for the information provided, we can write the equation:

Remember, though, that  will represent a percentage in a decimal form and will need to be translated. (There are other ways of doing this, but most students remember to do this translation at the end naturally.)

Solving for , you get:

This is .

### Example Question #16 : Other Percentage

What is  of  of ?

Explanation:

For percentage problems, the easiest way to start is by remembering that the word "of" is best translated as a multiplication, while the word "is" is best translated by an equals sign. Thus, for the information provided, we can write the equation:

Solving for , you get:

Alternatively you could first calculate  of , which is , and then calculate  of that, and you would arrive at the same answer.

### Example Question #17 : Other Percentage

A computer originally sold for  dollars. Its price was reduced by  and then again by . What was the final sale price for the computer? Round to the nearest cent.