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# Percentages Practice Problems Set 2

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Updated on Jul 15, 2011

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### Problems

1. 53% of 765 =
1. 395.55
2. 405.54
3. 359.55
4. 405.45
2. 200% of 40 =
1. 4
2. 60
3. 80
4. 100
3. 30% of 39 =
1. 27.3
2. 11.7
3. 2.73
4. 1.17
4. 72% converted to a decimal =
1. 0.0072
2. 0.072
3. 0.72
4. 7.2
5. Which of the following is 16% of 789?
1. 126.24
2. 12.624
3. 662.76
4. 66.276
6. What percentage of 12,000 is 216?
1. 18
2. 1.8
3. 0.18
4. 0.018
7. What percentage of 700 is 1,225?
1. 0.57
2. 0.6
3. 1.25
4. 1.75
8. What is % of 574, rounded to the nearest tenth?
1. 24.4
2. 24.3
3. 20
4. 30
9. 62.5% is equal to
10. Convert to a percentage.
1. 0.0075
2. 0.00075
3. 0.075
4. 0.75
11. Approximately how much money is a 20% tip on a restaurant bill of \$16?
1. 0.32
2. 3.2
3. 6.4
4. 12.8
12. Approximately how much money is a 15% tip on a restaurant bill of \$24?
1. 2.4
2. 3.2
3. 3.6
4. 4.8
13. What is 53.2% of 18?
1. 0.8424
2. 0.9579
3. 8.424
4. 9.576
14. What is 0.4% of 30?
1. 12
2. 0.12
3. 1.2
4. 0.012
15. What is 42% of 6?
1. 0.00252
2. 0.025
3. 2.52
4. 0.252
16. 60% is equivalent to

1. d.   The correct answer is 405.45.
2. c.   Convert the percent to a decimal and multiply: 2.0 × 40 = 80.
3. b.   The correct answer is 11.7.
4. c.   The correct answer is 0.72.
5. a.   The correct answer is 126.24.
6. d.   A percentage is a portion of 100 where x% = . So the equation is . Cross multiply: 12,000x = 216 × 100. Simplify: . Thus, x = 1.8%.
7. d.   The correct answer is 175%.
8. a.   To solve the problem, first change the percent to a decimal: 0.0425 × 574 = 24.395. Then, round to the nearest tenth: 24.4.
9. b.   62.5% = . You should multiply both the numerator and denominator by 10 to move the decimal point, resulting in , and then factor both the numerator and denominator to find out how far you can reduce the fraction: . If you cancel the three 5s that are in both the numerator and denominator, you will get .
10. c.   First, divide the numerator by the denominator. Then, multiply by 100, or move the decimal point two places to the right and add the percent sign: 6 ÷ 80 = 0.075; 0.075 × 100 = 7.5%.
11. b.   A quick way to figure a 20% tip is to calculate 10% of the total and then double that amount; 10% of \$16.00 is \$1.60; \$1.60 multiplied by 2 is \$3.20. Another method is to multiply 0.20 × \$16 = \$3.20 to get the solution.
12. c.   A quick way to figure a 15% tip is to calculate 10% of the total, and then add half that amount to the 10%. In this case, 10% of \$24 is \$2.40, and half of \$2.40 is \$1.20; \$2.40 + \$1.20 = \$3.60. Another method is to multiply 0.15 × \$24 = \$3.60 to get the solution.
13. d.   The correct answer is 9.576.
14. b.   The correct answer is 0.12.
15. c.   The correct answer is 2.52.
16. a.   To change a percent to a decimal, move the decimal point two places to the left and drop the percent sign: 0.6 and .

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