Algebra 1 Notes Sec 2.10
Name___________________________________
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Calculating Percent Increase and Decrease
Date________________
1) Ann works in a supermarket for $10.00 per hour. If her pay is increased to $12.00, then what is her
percent increase in pay?
2) At a supermarket, a certain item has increased from 75 cents per pound to 81 cents per pound. What
is the percent increase in the cost of the item?
3) At Furnace Woods School, enrollment increased from 320 students in 2014 to 349 students in 2015.
What is the percent change in enrollment?
4) The tuition at a college increased from 50,000 in 2014 to to 59,000 in 2015. What is the percent
change?
5) A used-car dealership buys a car for $2900 and then sells it for $4300. What is the percent increase?
6) On the first day of June, there were about 16.39 hours of daylight in a city. Five months later, there
were about 7.8 hours of daylight. What was the percent decrease?
Worksheet by Kuta Software LLC
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7) Tell whether there is an increase or decrease, and calculate the percent change.
Original Amount: $12
New Amount: $18
8) Tell whether there is an increase or decrease, and calculate the percent change.
Original Amount: 9 inches
New Amount: 6 inches
9) Tell whether there is an increase or decrease, and calculate the percent change.
Original Amount: 15 pounds
New Amount: 14 pounds
10) Tell whether there is an increase or decrease, and calculate the percent change.
Original Amount: 40.2 degrees
New Amount: 38.6 degrees
11) A company makes chocolate candy bars. The size of the candy bars needs to be the same in order to
produce a consistant product. The length of the candy bar needs to be 6 inches long to the nearest
tenth of an inch. What is the maximum and minimum length a candy bar can be? What is the
greatest percent error possible for a candy bar?
Worksheet by Kuta Software LLC
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