Percent of Change Percent Error

Ms Thomas bought some stock for $15 a share and sold it at $20 a share. Find the approximate percent of change in the price of the stock.

• Increase of 33.3%

• Increase of 30%

• Decrease of 33.3%

• Decrease of 30%

Lacey bought a new purse that originally cost $25 and is on sale for $15. Find the percent of change in the price in the purse.

• Decrease of 40%

• Decrease of 10%

• Decrease of 30%

• Decrease of 20%

Mrs. Banks bought a car for $25,000 and sold it 5 years later for $16,000. Find the percent decrease for the price of the car.

• 36%

• 9%

• 34%

• 26%

Jason had a salary change from $150 a week to $175 a week. What is the approximate percent increase of his salary?

• 16.7%

• 18.6%

• 14.7%

• 20.6%

You guessed that there were 256 gumballs in the jar. There were actually 510. Find your percent error. Round to the nearest tenth if necessary.

• 49.8%

• 49.9%

• 50.2%

• 50.3%

You estimate that you sent 135 texts last week but when you get the bill it was actually 108. 

• 20%

• 25%

• 30%

• 18%

You estimate that 200 people attend a school concert. The actual attendance was 240.   What is the percent error?

• 20%

• 18%

• 16%

• 17%

In 1999, the price of unleaded fuel was $1.09.  In 2015, the price of unleaded fuel is $1.89.  What is the percent change?

• 173% increase

• 73% increase

• 73% decrease

• 27% increase

As soon as a new car is purchased and driven away from the dealership, it begins to lose its value, or depreciate. Alonso bought a 2004 Plymouth Neon for $9559. One year later, the value of the car was $8500. What was the percent of change of the value of the car?

• 11.08% decrease

• 11.08% increase

• 12.46% decrease

• 12.46% increase

Find the Percent of Change.  Round to nearest Percent.
From 5 qt  to 18 qt

• 72% Increase

• 260% Increase

• 72% Decrease

• 260% Decrease