LESSON Practice B Percent Increase and Decrease

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Copyright by Holt, Rinehart and Middle School MathAll rights BPercent Increase and Decrease8-4LESSONFind each Percent Increase or Decrease to the nearest 16 to 30 to 15 to 35 to 40 to 45 to 18 to to 90 to 29 to 42 to 38 to 64 to 78 to 89 to Havel bought a car for $2400 and sold it for $ was the Percent of profit for Mr. Havel in selling the car? computer store buys a computer program for $24 and sells it for $ What is the Percent of Increase in the price? manufacturing company with 450 employees begins a new product line and must add 81 more is the Percent of Increase in the number of employees? earns $2700 a month. He received a 3% is Richard s new annual salary?

8-4 Percent Increase and Decrease (continued) LESSON To find the percent decrease: • Find the amount of decrease by subtracting the lesser number from the greater. • Write a fraction:percent decrease • If possible, simplify the fraction. • Rewrite the fraction as a percent.

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