Percent Change and Error

Three months ago, Santos could walk 2 miles in 40 minutes. Today he can walk 2 miles in 25 minutes. What is the percent change?

• 37%

• 48%

• 63%

• 62.5%

The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?

• 16.67%

• 20%

• 2500%

• 80%

The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

• 15.79%

• 18.75%

• 2.25%

• 18%

Jessie estimates the weight of her cat to be 8 pounds.  The actual weight of the cat was 10 pounds.  Find the percent error.  

• 15%

• 20%

• 25%

• 30%

Zed went to the store and bought a bag of chips.  He estimated there would be 350 chips in the package, but realized there were only 210 chips in that package.  What was his percent error?

• 35%

• 67%

• 85%

• 92%

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%

Sally went to the clearance rack at a department store and found a shirt she wanted to buy.  The shirt was $36.00 and is on sale for $24.00.  What is the percent of the decrease?

• 33%

• 67%

• 50%

• 34%

Ms. Scott receives a basket of apples at her door every Friday morning.  Last Friday, there were 5 apples in the basket.  This Friday, there were 8 apples in the basket.  What is the percent of increase in the number of apples in the basket?

• 38%

• 63%

• 60%

• 167%

Tickets to Disney World are $100. The price is going to increase on January 1. What is the percent of change if the cost increases to a $120?

• 25%

• 18%

• 20%

• 50%

Last year, 2,376 people attended a summer music festival. This year, attendance was 2,950. What was the percent of change in attendance to the nearest whole percent?

• Increase 24%

• Increase 19%

• Decrease 24%

• Decrease 19%