1. PRE-ALGEBRA QUIZ 7B -APPLICATIONS OF PERCENT

2. Write 12.5% as a decimal..125

3. Write 6.5% as a decimal..065

4. Translate the following sentence into an equation: 18 is 44% of what number? 18 =.44n

5. Translate the following sentence into an equation: 104 is 36% of what number? 104 =.36n

6. 15 is what percent of 85? 15 = 85p 85.17647 = 17.6%

7. 44 is what percent of 120? 44 = 120p 120.3666 = 36.7%

8. A price change from $44 to $62. 62 - 44 = x 44 100 18 = x 44 100 1800 = 44 x X = 40.9% increase

9. A price change from $56 to $42. 56 - 42 = x 56 100 14 = x 56 100 1400 = 56 x X = 25% decrease

10. Weight change from 165 lbs to 122 lbs. 165 - 122 = x 165 100 43 = x 165 100 4300 = 165 x X = 26.1% decrease

11. Weight change from 112 lbs to 132 lbs. 132 - 112 = x 112 100 20 = x 112 100 2000 = 112 x X = 17.9% increase

12. A car salesman was able to sell a car for $14,500. He earned 6% commission on the sale. How much was his commission? X= 14,500(.06) X = $870

13. A relator was able to sell a house for $167,500. He earned 5% commission on the sale. How much was his commission? X = 167500(.05) X= $8,375

14. Janet earns 8.5% commission on her clothing sales. If she wants to earn $100 commission, how much must she sell? 100 =.085x X = $1,176.47

15. Jack worked his first week at Hershey Park. He earned a total of $162.50. He was disappointed to see that $20.20 was withheld for taxes. What percent of his check was withheld? 20.2 = 162.5x X=.124307 = 12.4%

16. In 2002, the average monthly price for cell phone plans was $78.50. Because of data plans, the cost has increased 44.5% per month. What is the new average monthly cost? X = 44.5 78.5 100 100x = 3,493.25 X = 34.93 34.93+ 78.50 $113.43