Applications of Percent

Name: Revolt
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Question 1

Last year, Raul estimated that he would need 480 night lights, but he sold 420 night lights. This year, he bought 425 night lights and only sold 375. Which set of statements about the percent errors for the two years is true?

Revolt · Accepted Answer

C: The percent error for this year was lower. Raul estimated better this year.

Question 2

Al predicted that he would sell 220 hot dogs at lunch time. When he sold all 220 hot dogs, 35 people were still waiting in line to buy one hot dog each. What was the percent error in the estimate? Round the answer to the nearest tenth.

Revolt · Accepted Answer

C: 13.7%

Question 3

Espen predicted that he would sell 32 baseball caps, but he actually sold 29 baseball caps. Which expression would find the percent error? Use the table below to help answer the question.Percent ErrorItemApproximate valueExact valueErrorAbsolute errorRatioPercent errorBaseballcaps322933

Revolt · Accepted Answer

A: StartFraction 3 over 29 EndFraction (100)

Question 4

Marco predicted that he would sell 180 blankets. He actually sold 150 blankets. What are the values of a and b in the table below? Round to the nearest tenth if necessary.Percent ErrorItemApproximate valueExact valueErrorAbsolute errorRatioPercent errorBlankets180150 ab

Revolt · Accepted Answer

B: a = StartFraction 30 over 150 EndFraction; b = 20 percent

Question 5

Last year, Deanna bought 225 lamps when customers needed 250 lamps. This year, she bought 300 lamps but only sold 200 lamps. Which set of statements about the percent errors for the two years is true?

Revolt · Accepted Answer

B: The percent error for this year was higher. Deanna estimated better last year.

Question 6

Jenny predicted that she would sell 12 bracelets, but she actually sold 16 bracelets. Which expression would find the percent error? Use the table below to help answer the question.Percent ErrorItemApproximate valueExact valueErrorAbsolute errorRatioPercent errorBracelets1216–44

Revolt · Accepted Answer

D: StartFraction 4 over 16 EndFraction (100)

Question 7

Mr. Wong predicted that he would sell 45 automobiles. He actually sold 48 automobiles. What are the values of a and b in the table below?Percent ErrorItemApproximate valueExact valueErrorAbsolute errorRatioPercent errorAutomobiles4548 ab

Revolt · Accepted Answer

C: a = StartFraction 3 over 48 EndFraction; b = 6.25 percent

Question 8

Irina predicted that she would sell 75 books, but she actually sold 95 books. Which expression would find the percent error? Use the table below to help answer the question.Percent ErrorItemApproximate valueExact valueErrorAbsolute errorRatioPercent errorBooks7595–2020

Revolt · Accepted Answer

D: StartFraction 20 over 95 EndFraction (100)

Question 9

A survey of Gigi’s customers showed that 1,550 out of 1,700 of the customers buying tomatoes would buy organic tomatoes if the tomatoes were placed in crates. In the first month, 950 of those 1,700 customers actually bought the organic tomatoes. What was the percent error in the survey estimate of the number of people buying organic tomatoes? Round the answer to the nearest tenth.

Revolt · Accepted Answer

D: 63.2%

Question 10

A survey of Ghasi’s customers showed that 1,200 of the customers buying yarn would buy bamboo yarn. In the first month, 725 customers actually bought bamboo yarn. What was the percent error in the survey estimate of the number of people buying bamboo yarn? Round to the nearest tenth.

Revolt · Accepted Answer

C: 65.5%

Applications of Percent Answers

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