Solving Increase and Decrease
Percent Increase and DecreaseName: ________________________and Percent ApplicationsDate: _________ Color: _______1-2. Write a proportion to find each percent of increase or decrease. If necessary, round answers to the nearest tenth.1. 15 is increased to 20.2. 96 is decreased to 72.3-4. Write a proportion to find each amount of increase or decrease. If necessary, round answers to the nearest tenth.3. 55 is increased by 20%.4. 75 is decreased by 40%.5-6. Write a proportion to find the NEW amount after each increase or decrease. If necessary, round answers to the nearest tenth.5. $48 is increased by 35%.6. 446 is decreased by 91%.7-10. Write a proportion for each problem. Be sure to show all work. If necessary, round answers to the nearest cent.7. Cordless phone:Price: $64.99Sales Tax: 6% Sales Tax: __________Final Cost: __________8. Computer printerPrice: $149.99Sales Tax: 3.5% Sales Tax: __________Final Cost: __________9. Pair of blue jeans Original cost: $27.99Discount: 35% Discount amount: __________Final Cost: __________10. Calculator Original cost: $99.98Discount: 15% Discount amount: __________Final Cost: __________11-16. Write and solve a proportion to answer each question. Be sure to show all work.11. Shane works at a computer store. If a printer costs $299 and he has a commission rate of 7%, how much commission does he earn on the sale of the computer?12. Kayla earns a week salary of $290 plus a 5.5% commission on sales at a gift shop. How much would she make in a week if she sold $5700 worth of merchandise?13. Heather earns a commission of 5% on her weekly sales in a clothing shop. What will her weekly commission be if she sells $7500 worth of clothing?14. Your family takes a trip to the train station. The taxi fare is $17.85. You pay the taxi driver a 18% tip. How much will he get for a tip? 15. Your neighbor pays $40 to have her lawn mowed and always adds a 15% tip. You and your friend decide to mow the lawn together and split the earnings evenly. How much will each of you earn?16. You and your family go out for dinner and spend $125.00. You are going to give the waitress a 20% tip. How much will you give her for a tip? ................
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