Resources

Resources

Percent of change

25\%

more bugs this month than last month. The spider ate

8

bugs last month. How many bugs did the spider eat this month?

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Write an algebraic equation for the following problem and then solve it.

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A town's employment statistics show that

855

of its residents were unemployed last month. This is a decrease of

25 \%

from the previous month. How many residents were unemployed in the previous month?

What is the percent of change from

50

46

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4\%

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8\%

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4\%

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8\%

What is the percent of change from

8

4

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100\%

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50\%

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50\%

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100\%

What is the percent of change from

80

52

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28\%

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35\%

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35\%

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28\%

What is the percent of change from

25

22

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15\%

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12\%

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12\%

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15\%

What is the percent of change from

50

69

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19\%

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19\%

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38\%

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38\%

What is the percent of change from

48

72

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5\%

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50\%

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5\%

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50\%

Middletown Theater sold

9,960

tickets to Shakespearean plays last season. This season, the theater sold

95\%

fewer tickets to Shakespearean plays. How many such tickets did the theater sell this season?

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8,890

athletes finished the Sparrowtown Marathon. This year, the number of runners crossing the finish line was

20\%

lower. How many athletes finished the race this year?

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A particular truck in a transportation fleet was driven

171,720

miles last year. In comparison, it was driven

75\%

less this year. How much was the truck driven this year?

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In Greenwood, the average low temperature for January was

44\,^\circ\mathrm{F}

. The average low in February was

25\%

lower. What was the average low in February?

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\_\_\,^\circ\mathrm{F}

For a school project, Julie is investigating cell phone use in her hometown, Campbell. So far, she has found that the residents of Campbell used their cell phones for

219,420

minutes last year. This year, they used their cell phones for a total of

153,594

minutes. What is the percent of decrease in annual usage?

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Last semester, Melissa earned an average test score of

80

points on her math tests. This semester, her average score is

88

points. What is the percent of increase in Melissa's average test score?

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The depth of a lake in Centerville changes over time due to rainfall and evaporation. A few months ago, the depth was

65

feet. Currently, the depth is

52

feet. By what percent has the depth of the lake decreased?

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Last spring, the drama department at Belleville High School had

30

students audition for the musical. This spring, there were

24

students trying out. What is the percent of decrease in the number of students auditioning?

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The Trans-Global Shipping Company has been forced to lay off some workers due to a decrease in revenue. Last year, the company had to lay off

90

people. So far this year, they have had to lay off

30\%

more employees than last year. How many have been laid off this year?

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A beauty magazine had

8,320

subscribers last year. This year, after its parent company made some changes, the magazine had

45\%

fewer subscribers. How many subscribers were there this year?

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____ subscribers

Mackenzie just measured her dog and found out that it weighs

66\,\text{kilograms}

50\%

more than the last time Mackenzie measured. How much did the dog weigh last time?

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Wells's Solar Systems manufactures solar panels, and their business is growing. Last year, they hired

96

new employees, and this year they have hired

120

new employees. What is the percent of increase in the number of employees hired each year?

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Easy Cooking is a cooking supply company. Last year, the company sold a total of

17,090

ovens. This year, they sold

8,545

ovens. What is the percent of decrease in the annual sales of ovens?

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A family's home is currently worth

\$581,958

95\%

higher than the home was worth when they bought it. What was the value of the home when they bought it?

\$

Since school started, Brad has read

2

pages per night, on average. That is

80\%

fewer pages than he averaged over the summer. How many pages per night did Brad average during the summer?

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This month, a vegetarian restaurant used

138,193

ounces of spinach. That is

70\%

more than last month, when the restaurant had a different menu. How much spinach did the restaurant use last month?

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____ ounces of spinach

Colton is a sophomore at Manchester College. Tuition this year cost

\$6,468

per semester, which is

5\%

more than it was last year. What was last year's tuition price?

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\$

6,612

athletes runners crossed the finish line at the Dayton Marathon. According to the organizers' records, that is

5\%

lower than last year. How many runners finished the marathon last year?

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Rudy recently played

378

consecutive games of soccer. That is

35\%

longer than his previous record for consecutive games. How many games was that?

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consecutive games

The average serving size of beef at restaurants is currently

6

ounces, which is

20\%

larger than it was several years ago. What was the previous average serving size?

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Vince has a cherry tree in his yard. Currently the tree is

51

feet tall. That is

50\%

taller than it was when Vince planted it. How tall was the tree then?

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Michelle keeps track of her driving so that she can take a tax deduction. Michelle drove

372

miles this month, which is

60\%

less than last month. How much did she drive last month?

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According to his running log, Edmond averaged

3

miles per week this month, which is

70\%

less than last month. How much did he average last month?

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What is the percent of change from

100

36

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64\%

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79\%

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79\%

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64\%

What is the percent of change from

50

89

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78\%

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78\%

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79\%

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79\%

Trudy, a professional golfer, has an average score of

102

points so far this season, which is

20\%

higher than her average score last season. What was Trudy's average score last season?

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Easy Cooking is a cooking supply company. This year, the company sold

32,418

ovens. According to a report prepared by the sales team, that is

10\%

fewer than they sold last year. How many ovens did they sell last year?

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This year, Alana and her sister paid

\$114

each for their annual trip to see 'The Nutcracker' at the Centerville Ballet. That is

20\%

more expensive than the cost of each ticket last year. What was last year's ticket price?

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\$

This year, a beauty magazine had

6,966

subscribers. That is

80\%

more than they had last year, before its parent company made some changes. How many subscribers did the magazine have last year?

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____ subscribers

The average amount of rent paid for apartments in Washington is

\$2,135

22\%

more than it was last spring. What was the average last spring?

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\$

Rhianna recently sold some farmland and bought a new plot that consists of

2,024

acres. Rhianna calculates that this is

10\%

more acreage than she used to own. What was the acreage of the old land?

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Wanda has run many marathons and keeps track of all of her finishing times. At her most recent race, she finished in

136

minutes. That is

20\%

shorter than her previous race. What was Wanda's finishing time at the previous race?

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At the end of the year, cars made in the current year are marked down to make room for next year's models. One particular model has a sale price of

\$20,727

10\%

less than it sold for when it was new. What was the original price of the vehicle?

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\$

This month, a carpenter made

9

tables. That is

50\%

more than she made last month. How many tables did the carpenter make last month?

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After changing the amount of time he works, Samuel has begun earning a salary of

\$48,854

48\%

less than before. How much did Samuel's salary use to be?

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\$

20

consecutive games of soccer without being taken off the field. Then, after a single game on the sidelines, he played another string of consecutive games, although this string was

30\%

longer. How many consecutive games was that?

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____ consecutive games

Elizabeth just measured herself and found out she is

51

inches tall. The last time she measured, she was

50

inches tall. What percent taller is Elizabeth now?

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Jason attends a private school where he must wear a uniform. Last year, the price of the uniform was

\$68

. This year's uniform price is

25\%

more. How much are uniforms this year?

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\$

The height of a mountain on a tropical island changes due to volcanic activity. When the mountain was last measured, its height was

4,600

meters. Now it is

24\%

taller. How tall is the mountain currently?

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The height of a mountain on a tropical island changes due to volcanic activity. When the mountain was last measured, its height was

4,850

meters. Now it is

18\%

shorter. How tall is the mountain currently?

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Bill planted sunflowers in the community garden. During his last visit to the garden, the plants were

70

inches tall. Today, Bill found them to be

20\%

taller. How tall are the sunflowers now?

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The last time he checked, Brandon was

70

inches tall. Brandon just measured himself again and found out that he is

20\%

taller now. How tall is he now?

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