Chapter 6: Percents

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42430_Cleaves_ch06 4/12/04 1:22 PM Page 189 News That Counts Recognition for Corporate Conscience Customers and employees want to do business with and work for companies they believe are helping to make the world a better place. Corporate philanthropy is growing in popularity as a cost effective means for building desirable corporate images. Based on the results of The Chronicle of Philanthropy’s annual survey of sales and cash donations for 2002, Wal-Mart Stores, Inc., was recognized as the “Largest Corporate Cash Giver.” This year’s survey of the 400 largest charities in the nation showed that donations dropped to $46.9 billion in 2002. This was down from $47.5 billion in 2001. While overall donations were down, Wal- Mart’s cash contributions increased in 2002 to $136 million, up 17% from 2001. Wal-Mart’s contributions were shared with over 80,000 organizations in 2002. Civic and community organizations received $53,699,000; community health and welfare, $43,488,000; education, $34,418,000, environmental concerns, $1,622,000, and other categories, $2,773,000. Wal-Mart Stores, Inc., was recognized for its corporate conscience. Even more important is the fact that the buying public will more than likely view the company favorably. Sources: The Chronicle of Philanthropy, October 30, 2003. www.walmartstores.com, “Wal-Mart Named America’s Largest Corporate Cash Giver,” October 29, 2003, press release. Questions 1. What is the percent of decrease in overall contributions to the 400 charities during 2002 as compared to 2001? (Round to the nearest tenth of a percent.) 2. Given the total dollar contribution for 2002 and the percent of increase, what total dollar amount did Wal- Mart contribute during 2001? (Round to the nearest thousand dollars.) 3. What percent of Wal-Mart’s contributions was made to each of the following categories? (Round to the nearest whole percent.) a) Civic and community b) Community health and welfare c) Education d) Environmental concerns Answers in IRM 6-3 Section Exercises Skill Builders 1. A number increased from 5,286 to 7,595. Find the amount of increase. 7,595 5,286 2,309 3. Find the amount of increase if 432 is increased by 25%. P = RB P = 025 . ( 432) P = 108 5. If 135 is decreased by 75%, what is the new amount? Rate of new amount 100% 75% 25% P RB New amount 0.25(135) 33.75 7. A number increased from 224 to 336. Find the percent of increase. Amount of increase = 336 − 224 = 112 P R = B amount of increase Rate of increase = original amount 112 R = 224 R = 05 . × 100% R = 50% 2. A number decreased from 486 to 104. Find the amount of decrease. 486 104 382 4. Find the amount of decrease if 68 is decreased by 15%. P = RB P = 01568 . ( ) P = 10. 2 6. If 78 is increased by 40%, what is the new amount? Rate of new amount 100% 40% 140% P RB New amount = 1.4(78) New amount = 109.2 8. A number decreased from 250 to 195. Find the rate of decrease. Amount of decrease = 250 −195 = 55 P R = B amount of decrease Rate of decrease = original amount 55 R = 250 R = 0. 22 × 100% R = 22% <strong>Percents</strong> 189
42430_Cleaves_ch06 4/12/04 1:22 PM Page 190 9. A number is decreased by 40% to 525. What is the original amount? Rate represented = 100% −40% by new amount = 60% new amount Original number = rate represented by new amount 525 Original number = 06 . Original number = 875 10. A number is increased by 15% to 43.7. Find the original amount. Rate represented by new amount 100% 15% 115% new amount Original number = rate represented by new amount Original number = 43 . 7 115 . Original number = 38 Applications 11. The cost of a pound of nails increased from $2.36 to $2.53. What is the percent of increase to the nearest wholenumber percent? Amount of increase = $. 253− $. 236 = $. 017 P R = B 017 . R = = 0. 072 × 100% 236 . R = 7% 12. Wrigley recently announced an increase in the price of a five-stick pack of gum. This first increase in 16 years will raise the price by 5 cents to 30 cents. Find the percent of increase. Round to the nearest percent. Original price = 30 − 5 = 25 P R = B 5 R = = 20% 25 13. Bret Davis is getting a 4.5% raise. His current salary is $38,950. How much will his raise be? P = RB P = 0. 045($38,950) P = $, 1 752. 75 14. Kewanna Johns plans to lose 12% of her weight in the next 12 weeks. She currently weighs 218 pounds. How much does she expect to lose? P P P = = = RB 012 . ( 218) 26. 16 pounds 15. DeMarco Jones makes $13.95 per hour but is getting a 5.5% increase. What is his new wage per hour to the nearest cent? Rate of new amount = 100% + rate of increase = 100% + 5. 5% = 105.% 5 rate of new original New amount = amount × amount = 105. 5%($ 13. 95) = 1. 055( 13. 95) = $ 14. 71725 = $ 14. 72 16. Carol Wynne bought a silver tray that originally cost $195 and was advertised at 65% off. What was the sale price of the tray? Rate of new amount = 100% − rate of decrease = 100% − 65% = 35% rate of new original New amount = × amount amount = 35%( 195) = 035195 . ( ) = $ 68. 25 17. A laptop computer originally priced at $2,400 now sells for $2,700. What is the percent of increase? Amount of increase = new amount − original amount Amount of increase = 2, 700 − 2, 400 = $ 300 $ 300 Percent of increase = $ 2, 400 = 0. 125 × 100% = 12.% 5 18. Federated Department Stores dropped the price of a winter coat by 15% to $149. What was the original price to the nearest cent? Rate of reduced price = 100% − 15% = 85% reduced price Original price = rate of reduced price $ 149 Original price = 85% $ 149 = 085 . = $ 175. 29 190 <strong>Chapter</strong> 6
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Chapter 6: Percents

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