Percent Increase/Decrease (Finding the Percent)
Find the percent of the increase or decrease (round your answers to the nearest tenth of a percent):
- You buy a pair of sneakers for \$23 on sale. The regular price is \$42. What is the percent discount?
- A store is going out of business. Everything is the same percent off, but they won't tell you what percent the discount is! You buy a \$5 book and pay \$3.50 for it. By what percent is everything in the store discounted?
- Jenay bought a hamburger for \$3.50 and fries for \$2.75. She left a total of \$8 for her server. What percent did she tip?
- Your grade in math has improved from 78 to 95! But what percent did your grade go up?
- Jason bought some calculators for \$12. He's now selling them for \$27 the day before the SAT. What percent mark up is he applying to his calculators?
- Winter is coming and everyone was expecting a drop in temperature. But when yesterday was 65 degrees and today is 42 degrees, everyone was shocked. By what percent did the temperature decrease?
- Your teacher says that you need to raise your grade by 50% in order to pass the a class. You think you have to raise your grade by more than 50%. If you currently have 239 points and you need 400 points to pass, by what percent do you need to raise our grade? Was your teacher correct?
- You are trying to build muscle as you train for a swim meet. You used to eat 1700 calories a day. You are trying to eat 2500 calories a day. By what percent are you increasing your caloric intake?