Percent Increase and Decrease

Question 1

The attendance at a seminar in year 1 was 500. In Year 2, the attendance changed by 100. What was the percent change in attendance?

Revolt · Accepted Answer

C: The percent change was 20%.

Question 2

Holly had $5,000 in her bank account. She withdrew $800 to buy a new bike. What is the percent decrease in the balance of her account?

Revolt · Accepted Answer

B: The percent decrease is 16%.

Question 3

A count went up from 450 to 600. What was the approximate percent increase?

Revolt · Accepted Answer

A: The percent increase was approximately 33%.

Question 4

Roberto purchased airline tickets for his family. The tickets cost $1,250. The airline also charged a luggage fee, bringing the total cost to $1,400. What is the percent increase in the cost due to the luggage fee?

Revolt · Accepted Answer

A: The cost increase is 12%.

Question 5

Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45? Select three options.

Revolt · Accepted Answer

B: The ratio of the percent increase is not the same as the percent decrease.; C: The ratio for the percent increase has a smaller denominator than the percent decrease.; E: The original amount for the percent increase is different from the original amount for the percent decrease.

Question 6

If the average grade of an English class rose from 70 to 85, what is the approximate percent increase?

Revolt · Accepted Answer

C: The percent increase is approximately 21%.

Question 7

Marie and Jorge are both trying to lose weight. After 3 months they compared their weight loss. Marie’s weight went from 175 to 150. Jorge’s weight went from 190 to 180. Which statements are true regarding their weight loss? Select three options.

Revolt · Accepted Answer

A: Jorge’s weight change was approximately 5%.; B: Marie’s weight change was approximately 14%.; C: Marie had the greater percent change.

Question 8

Iliana’s math grade increased from 65 to 86. Fiona’s math grade increased from 70 to 80. What is the difference, rounded to the nearest whole number, between the approximate percent increases?

Revolt · Accepted Answer

C: 18 percent

Question 9

What is the approximate percent change in a temperature that went down from 120 degrees to 100 degrees?

Revolt · Accepted Answer

A: The percent change is approximately 17%.

Question 10

The new number, 200, is 400 less than the original number. What is the approximate percent change?

Revolt · Accepted Answer

C: The percent change is approximately 66%.

Percent Increase and Decrease Answers

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