Percent of Change- M7

During a study on pet populations, Andrew noticed that a city's cat population grew from 450 to 675 over the last month. What was the increase in the population?

• 225 cats

• 200 cats

• 250 cats

• 175 cats

Kendall purchased a vintage lamp for $45 and later sold it for $54. What is the percent increase in the value of the lamp that Kendall experienced? Show your work and circle your final answer.

• 10%

• 15%

• 20%

• 25%

Carson's cat weighed 80 lbs and then lost weight to reach 72 lbs. What is the percent decrease in the weight of Carson's cat?

• 5%

• 8%

• 10%

• 12%

Mr. Thompson's Chemistry class, including students like Chace and Sawyer, had 80 students. The next semester it decreased to 48. What is the percent of change? Was it an increase or decrease?

• 40% decrease

• 40% increase

• 42.5% decrease

• 42.5% increase

Jane and Dylan estimated they would read 50 pages of their book tonight, but they only managed to read 40 pages. What was their percent error?

• 20%

• 25%

• 10%

• 15%

Kendall bought a pair of jeans originally priced at $45. It was on sale for $36. What is the percent markdown Kendall received? If necessary, round to the nearest whole number percent.

• 10%

• 15%

• 20%

• 25%

Chace and Tessa are buying a pair of sneakers that costs $80. If they are now 20% off, what is their current price?

• $16

• $64

• $80

• $96

Jazmine is considering buying a laptop for school. The laptop is marked up 25% from its original price of $200. How much will the laptop sell for?

• $220

• $240

• $250

• $275

Jazmine is considering buying a pair of $60 shoes for Ronaldo as a gift. If the store applies a 20% markup, what would be the selling price?

• $70.00

• $72.00

• $68.00

• $74.00

Jackson cannot decide which of two skateboards to buy. The original price of each is $480. The first is marked down by 55%. The second is marked down by 20% with an additional 30% off. Which skateboard should Jackson buy if the skateboards are the same except for the selling price? Find the price for each bicycle and explain your answer using words. Show your work.