Question 1

Solve the problem.
-A chemical solution contains 3% salt. How much salt is in 4 mL of solution?
A)1.2 mL
B)133.333 mL
C)13.333 mL
D)0.12 mL

Accepted Answer

To find the amount of salt in 4 mL of a 3% salt solution, multiply the total volume by the percentage of salt: $4 mL \times 0.03 = 0.12 mL$.

Question 2

Evaluate the formula for the given values of the variables.
-What percent of 110 is 55?
A)2%
B)50%
C)200%
D)0%

Accepted Answer

To find what percent 55 is of 110, you use the formula (part/whole)*100. So, (55/110)*100 = 50%.

Question 3

Solve the problem. Round to the nearest tenth of a percent.
-What percent of 8 is 0.04?
A)0.5%
B)5.0%
C)200.0%
D)50.0%

Accepted Answer

To find what percent 0.04 is of 8, use the formula (part/whole)*100 = percentage. So, (0.04/8)*100 = 0.5%.

Question 4

Solve the problem. Round to the nearest tenth of a percent.
-What percent of 29 is 29?
A)0%
B)100%
C)1%
D)200%

Accepted Answer

To find what percent of 29 is 29, you divide 29 by 29, which equals 1, and then multiply by 100 to convert to a percentage, resulting in 100%.

Question 5

Solve the problem.
-During one year, the Cheung's real estate bill included $200 for county services. Of this amount, $112 went to the highway department. What percent did the county highway department receive? (Round answer to two Decimal places.)
A)56.00%
B)44.00%
C)11.20%
D)55.50%

Accepted Answer

The county highway department received $112 out of $200, which is calculated as ($112 / $200) * 100% = 56.00%.

Question 6

Solve the problem. Round to the nearest tenth of a percent.
-What percent of 52 is 737?
A)141.7%
B)0.7%
C)1417.3%
D)0.1%

Accepted Answer

To find what percent 737 is of 52, divide 737 by 52 and then multiply by 100. (737/52) * 100 = 1417.3%.

Question 7

Solve the problem.
-On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 34 questions correct. What was the percent of increase?
A)26.5%
B)64%
C)9%
D)36%

Accepted Answer

The percent of increase is calculated as ((new amount - original amount) / original amount) * 100. So, ((34 - 25) / 25) * 100 = (9 / 25) * 100 = 36%.

Question 8

Solve the problem. Round to the nearest tenth of a percent.
-4.1 is what percent of 20.9?
A)19.6%
B)0.2%
C)509.8%
D)5.1%

Accepted Answer

4.1 is approximately 19.6% of 20.9 when calculated as (4.1/20.9) * 100 and rounded to the nearest tenth.

Question 9

Answer the question.
-In a school survey, students showed these preferences for instructional materials. Answer the question.  About how many students would you expect to prefer written materials in a school of 500 students?
A)About 45 students
B)About 9 students
C)About 180 students
D)About 90 students

Accepted Answer

The answer of Answer the question.
-In a school survey, students...

Question 10

Solve the problem. Round to the nearest tenth of a percent.
-What percent of 187 is 11.7?
A)6.3%
B)1598.3%
C)0.2%
D)0.1%

Accepted Answer

To find what percent 11.7 is of 187, use the formula: (part/whole)*100. So, (11.7/187)*100 = 6.25%, which rounds to 6.3%.

Question 11

Solve the problem.
-Jennifer's annual salary increased from $28,000 to $49,000 over the last five years. Find the percent increase in her salary during this time period. Round to the nearest tenth of a percent.
A)42.9%
B)0.8%
C)7.5%
D)75.0%

Accepted Answer

The percent increase in Jennifer's salary is calculated by the formula: [(New Salary - Old Salary) / Old Salary] * 100. So, [(49,000 - 28,000) / 28,000] * 100 = 75%.

Question 12

Solve the problem.
-Sarah left a 15% tip of $10.20 for a meal. What was the cost of the meal before the tip?
A)$78.20
B)$20.40
C)$68.00
D)$1.53

Accepted Answer

The tip was 15% of the cost of the meal, so to find the original cost, you divide the tip amount by 15% (or 0.15). $10.20 / 0.15 = $68.00.

Question 13

Solve the problem.
-During one year, the Schmidt's real estate bill included $268 for miscellaneous services. Of this amount, 65% went to the library fund. How much money did the library receive?
A)$75.75
B)$154.20
C)$174.20
D)$147.40

Accepted Answer

The answer of Solve the problem.
-During one year, the Schmidt's...

Question 14

Solve the problem.
-The parking lot at a grocery store has 60 cars in it. 45% of the cars are blue. How many cars are blue?
A)13 cars
B)27 cars
C)133 cars
D)270 cars

Accepted Answer

To find the number of blue cars, multiply the total number of cars by the percentage of blue cars: 60 * 0.45 = 27.

Question 15

Solve the problem. Round to the nearest tenth of a percent.
-What percent of 2089 is 24?
A)1.1%
B)11.5%
C)21.5%
D)8704.2%

Accepted Answer

To find what percent 24 is of 2089, use the formula (part/whole)*100 = (24/2089)*100 ≈ 1.1%.

Question 16

Solve the problem.
-Andy left a 15% tip for a meal that cost $38. What was the total cost of the meal including the tip?
A)$5.70
B)$43.70
C)$32.30
D)$49.40

Accepted Answer

The tip is 15% of $38, which is $5.70. Adding the tip to the original cost, $38 + $5.70 = $43.70.

Question 17

Solve the problem.
-During one year, the Larson's real estate bill included $434 for local schools. Of this amount, $125 went to the high school district. What percent did the Larsons pay to the high school district? (Round answer to two decimal Places.)
A)12.50%
B)28.80%
C)71.20%
D)28.57%

Accepted Answer

To find the percentage the Larsons paid to the high school district, divide the amount paid to the high school district ($125) by the total amount paid for local schools ($434), then multiply by 100. $ \frac{125}{434} \times 100 \approx 28.80\% $.

Question 18

Answer the question.
-In a school survey, students showed these preferences for instructional materials. Answer the question.  About how many students would you expect to prefer computers in a school of 500 students?
A)About 90 students
B)About 100 students
C)About 36 students
D)About 180 students

Accepted Answer

The answer of Answer the question.
-In a school survey, students...

Question 19

Solve the problem. Round to the nearest tenth of a percent.
-84.8 is what percent of 9?
A)10.6%
B)942.2%
C)9422.0%
D)1.1%

Accepted Answer

84.8 is 942.2% of 9, calculated as (84.8 / 9) * 100 = 942.2%.

Question 20

Solve the problem.
-During one year, the Green's real estate bill included $315 for city services. The fire department received 23% of that amount. How much money went to the fire department?
A)$72.45
B)$52.45
C)$77.00
D)$7.25

Accepted Answer

To find the amount that went to the fire department, calculate 23% of $315. This is done by multiplying 315 by 0.23, which equals $72.45.

Quiz 2: Solving Equations and Inequalities

Solve the problem. -A chemical solution contains 3% salt. How much salt is in 4 mL of solution?

Evaluate the formula for the given values of the variables. -What percent of 110 is 55?

Solve the problem. Round to the nearest tenth of a percent. -What percent of 8 is 0.04?

Solve the problem. Round to the nearest tenth of a percent. -What percent of 29 is 29?

Solve the problem. -During one year, the Cheung's real estate bill included $200 for county services. Of this amount, $112 went to the highway department. What percent did the county highway department receive? (Round answer to two Decimal places.)

Solve the problem. Round to the nearest tenth of a percent. -What percent of 52 is 737?

Solve the problem. -On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 34 questions correct. What was the percent of increase?

Solve the problem. Round to the nearest tenth of a percent. -4.1 is what percent of 20.9?

Answer the question. -In a school survey, students showed these preferences for instructional materials. Answer the question. About how many students would you expect to prefer written materials in a school of 500 students?

Solve the problem. Round to the nearest tenth of a percent. -What percent of 187 is 11.7?

Solve the problem. -Jennifer's annual salary increased from $28,000 to $49,000 over the last five years. Find the percent increase in her salary during this time period. Round to the nearest tenth of a percent.

Solve the problem. -Sarah left a 15% tip of $10.20 for a meal. What was the cost of the meal before the tip?

Solve the problem. -During one year, the Schmidt's real estate bill included $268 for miscellaneous services. Of this amount, 65% went to the library fund. How much money did the library receive?

Solve the problem. -The parking lot at a grocery store has 60 cars in it. 45% of the cars are blue. How many cars are blue?

Solve the problem. Round to the nearest tenth of a percent. -What percent of 2089 is 24?

Solve the problem. -Andy left a 15% tip for a meal that cost $38. What was the total cost of the meal including the tip?

Solve the problem. -During one year, the Larson's real estate bill included $434 for local schools. Of this amount, $125 went to the high school district. What percent did the Larsons pay to the high school district? (Round answer to two decimal Places.)

Answer the question. -In a school survey, students showed these preferences for instructional materials. Answer the question. About how many students would you expect to prefer computers in a school of 500 students?

Solve the problem. Round to the nearest tenth of a percent. -84.8 is what percent of 9?

Solve the problem. -During one year, the Green's real estate bill included $315 for city services. The fire department received 23% of that amount. How much money went to the fire department?