### All ACT Math Resources

## 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?

**Possible Answers:**

6.25%

7.125%

6.8%

5.5%

8%

**Correct answer:**

6.8%

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.

**Possible Answers:**

32.5%

40.0%

25.0%

37.5%

30.0%

**Correct answer:**

37.5%

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?

**Possible Answers:**

15%

25%

20%

30%

35%

**Correct answer:**

25%

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

**Possible Answers:**

31 years

9 years

28 years

19 years

30 years

**Correct answer:**

28 years

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?

**Possible Answers:**

729

459

2,700

900

836

**Correct answer:**

729

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.)

**Possible Answers:**

**Correct answer:**

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

**Possible Answers:**

**Correct answer:**

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.

**Possible Answers:**

**Correct answer:**

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 ?

**Possible Answers:**

**Correct answer:**

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.

**Possible Answers:**

**Correct answer:**

The most common way to do a problem like this is to begin by applying the first discount, calculating the amount to be removed from the original price. This is done by multiplying the original price by . This gives you . This is then subtracted from to give you . Once again, this new number is multiplied, now by . This gives you . When subtracted from , this gives you a final price of , or the rounded value of .

A simpler way to do this is to realize that the first price reduction makes the new price to be of the original. The second will then make the price to be of the intermediary price. Thus, you could easily compute:

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