Question 1

Solve the problem. Round to the nearest hundredth.
-80 is 30% of what number?
A) 26.67
B) 24.00
C) 266.67
D) 2666.70

Accepted Answer

To find the number that 80 is 30% of, you set up the equation 0.30 * x = 80, where x is the number you're trying to find. Solving for x gives x = 80 / 0.30 = 266.67.

Question 2

Solve the problem. Round to the nearest hundredth.
-21 is 2% of what number?
A) 105.00
B) 10,500.00
C) 42.00
D) 1050.00

Accepted Answer

To find the number, divide 21 by 0.02 (which is 2% expressed as a decimal). 21 ÷ 0.02 = 1050.00.

Question 3

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-All 31 of the students in a mathematics class attended class on Monday. On Tuesday only 22 Students attended. What was the percent decrease?
A) 71%
B) 40.9%
C) 29%
D) 59.1%

Accepted Answer

The answer of Solve the problem. Where appropriate, round to...

Question 4

Solve the problem. Round to the nearest hundredth.
-What is 88% of 368?
A) 32,384.00
B) 3238.40
C) 32.38
D) 323.84

Accepted Answer

To find 88% of 368, multiply 368 by 0.88, which equals 323.84.

Question 5

Solve the problem. Round to the nearest hundredth.
-32% of what number is 83?
A) 0.39
B) 259.38
C) 2593.80
D) 39.00

Accepted Answer

To find the number that 83 represents 32% of, you divide 83 by 0.32 (since 32% as a decimal is 0.32). Doing the math, 83 / 0.32 = 259.375, which rounds to 259.38.

Question 6

Solve the problem. Round to the nearest hundredth.
-170% of 390 is what number?
A) 6630.00
B) 66.30
C) 663.00
D) 66,300.00

Accepted Answer

To find 170% of 390, convert the percentage to a decimal by dividing by 100, which gives 1.7. Then multiply 390 by 1.7 to get 663.00.

Question 7

Solve the problem. Round to the nearest hundredth.
-928 is what percent of 1835?
A) 197.74%
B) 0.51%
C) 50.57%
D) 0.05%

Accepted Answer

To find what percent 928 is of 1835, divide 928 by 1835 and then multiply by 100. $ \frac{928}{1835} \times 100 \approx 50.57\%$.

Question 8

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-The graph below shows the number of internet host sites for five consecutive years. Find the Percent increase in host sites from 2008 to 2009. Round to the nearest percent. 
A) 0.8200%
B) 82%
C) 1.0200%
D) 102%

Accepted Answer

The answer of Solve the problem. Where appropriate, round to...

Question 9

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-Enrollment in a business seminar increased from 67 people to 91 people. What was the percent Increase?
A) 64.2%
B) 26.4%
C) 73.6%
D) 35.8%

Accepted Answer

The answer of Solve the problem. Where appropriate, round to...

Question 10

Solve the problem. Round to the nearest hundredth.
-8.5% of 45 is what number?
A) 3.83
B) 0.38
C) 383.00
D) 38.30

Accepted Answer

To find 8.5% of 45, multiply 45 by 0.085 (since 8.5% = 8.5/100 = 0.085). This equals 3.825, which rounds to 3.83 to the nearest hundredth.

Question 11

Solve the problem. Round to the nearest hundredth.
-$521.81 is what percent of $59.31?
A) 11.37%
B) 1.10%
C) 879.80%
D) 8798.00%

Accepted Answer

To find what percent $521.81 is of $59.31, you divide $521.81 by $59.31 and then multiply by 100. Doing the math: ($521.81 / $59.31) * 100 ≈ 879.80%.

Question 12

Solve the problem. Round to the nearest hundredth.
-What is 35% of 1020?
A) 35,700.00
B) 35.70
C) 3570.00
D) 357.00

Accepted Answer

To find 35% of 1020, multiply 1020 by 0.35 (35/100): 1020 * 0.35 = 357. Therefore, the correct answer is 357.00, rounded to the nearest hundredth.

Question 13

Solve the problem. Round to the nearest hundredth.
-What percent of 101 is 11.72?
A) 0.09%
B) 861.77%
C) 0.12%
D) 11.60%

Accepted Answer

To find what percent 11.72 is of 101, you divide 11.72 by 101 and then multiply by 100. $ \frac{11.72}{101} \times 100 = 11.60\%$.

Question 14

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the Student got 31 questions correct. What was the percent increase?
A) 19.4%
B) 76%
C) 6%
D) 24%

Accepted Answer

The percent increase is calculated as ((31 - 25) / 25) * 100 = 24%.

Question 15

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-The price of a printer was reduced from $400 to $160. What was the percent decrease?
A) 150%
B) 60%
C) 40%
D) 65%

Accepted Answer

The percent decrease is calculated by the formula: [(Original Price - New Price) / Original Price] * 100. So, [(400 - 160) / 400] * 100 = 60%.

Question 16

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-The graph shows the number of cars (in thousands) produced by a car manufacturer in the years 1980, 1985, 1990, 1995, 2000, and 2005. Which five -year period saw the largest percent increase in Production? 
A) 1980 to 1995
B) 1980 to 1985
C) 1995 to 2000
D) 1990 to 1995

Accepted Answer

The answer of Solve the problem. Where appropriate, round to...

Question 17

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-By switching service providers, a familyʹs telephone bill decreased from about $50 a month to About $45. What was the percent decrease?
A) 11%
B) 11.1%
C) 5%
D) 10%

Accepted Answer

The answer of Solve the problem. Where appropriate, round to...

Question 18

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-The graph below shows a certain countryʹs peanut production in thousands of pounds for the Years 2004, 2006, 2008, 2010, and 2012. Find the percent increase in peanut production from 2008 to 2010. 
A) 0.0060%
B) 0.6%
C) 3.3%
D) 0.0330%

Accepted Answer

The answer of Solve the problem. Where appropriate, round to...

Question 19

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-Sales of frozen pizza for a club fundraiser increased from 500 one year to 540 the next year. What Was the percent increase?
A) 7.4%
B) 92%
C) 8%
D) 92.6%

Accepted Answer

The percent increase is calculated by the formula: ((new value - old value) / old value) * 100. So, ((540 - 500) / 500) * 100 = 8%.

Question 20

Solve the problem. Where appropriate, round to the nearest tenth of a percent.
-The graph below shows how the average value of an automobile, which costs $20,000 new, Changes as it ages. Find the percent decrease in value as the car ages from 2 years old to 3 years Old. Round to the nearest percent. 
A) 0.1200%
B) 0.1100%
C) 12%
D) 11%

Accepted Answer

The answer of Solve the problem. Where appropriate, round to...

Quiz 10: Consumer Mathematics

Solve the problem. Round to the nearest hundredth. -80 is 30% of what number?

Solve the problem. Round to the nearest hundredth. -21 is 2% of what number?

Solve the problem. Where appropriate, round to the nearest tenth of a percent. -All 31 of the students in a mathematics class attended class on Monday. On Tuesday only 22 Students attended. What was the percent decrease?

Solve the problem. Round to the nearest hundredth. -What is 88% of 368?

Solve the problem. Round to the nearest hundredth. -32% of what number is 83?

Solve the problem. Round to the nearest hundredth. -170% of 390 is what number?

Solve the problem. Round to the nearest hundredth. -928 is what percent of 1835?

Solve the problem. Where appropriate, round to the nearest tenth of a percent. -The graph below shows the number of internet host sites for five consecutive years. Find the Percent increase in host sites from 2008 to 2009. Round to the nearest percent.

Solve the problem. Where appropriate, round to the nearest tenth of a percent. -Enrollment in a business seminar increased from 67 people to 91 people. What was the percent Increase?

Solve the problem. Round to the nearest hundredth. -8.5% of 45 is what number?

Solve the problem. Round to the nearest hundredth. -$521.81 is what percent of $59.31?

Solve the problem. Round to the nearest hundredth. -What is 35% of 1020?

Solve the problem. Round to the nearest hundredth. -What percent of 101 is 11.72?

Solve the problem. Where appropriate, round to the nearest tenth of a percent. -On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the Student got 31 questions correct. What was the percent increase?

Solve the problem. Where appropriate, round to the nearest tenth of a percent. -The price of a printer was reduced from $400 to $160. What was the percent decrease?

Solve the problem. Where appropriate, round to the nearest tenth of a percent. -The graph shows the number of cars (in thousands) produced by a car manufacturer in the years 1980, 1985, 1990, 1995, 2000, and 2005. Which five -year period saw the largest percent increase in Production?

Solve the problem. Where appropriate, round to the nearest tenth of a percent. -By switching service providers, a familyʹs telephone bill decreased from about $50 a month to About $45. What was the percent decrease?

Solve the problem. Where appropriate, round to the nearest tenth of a percent. -The graph below shows a certain countryʹs peanut production in thousands of pounds for the Years 2004, 2006, 2008, 2010, and 2012. Find the percent increase in peanut production from 2008 to 2010.

Solve the problem. Where appropriate, round to the nearest tenth of a percent. -Sales of frozen pizza for a club fundraiser increased from 500 one year to 540 the next year. What Was the percent increase?