Resources

Resources

Percent error: word problems

The volume of a rectangular prism is

90 \mathrm{in}^{3}

. Bob measures the sides to be

2

5

2

52

10

14

in. In calculating the volume, what is the relative error, to the nearest hundredth.

\newline

During last year's basketball season, Jackson attempted

150

free throws of which he made

120

. So far this season, he's attempted

24

16

. A player's free-throw percentage is defined to be the percent of free-throws made out of the number of free-throws attempted. Assuming calculations began with the start of last year's season, which of the following best approximates Jackson's overall free-throw percentage to date?

Enola wants to buy a car for

\$ 25,000

, but can only get a loan from the bank for

\$ 19,000

. What percentage does Enola have to put down in order to pay for the car?

\newline

Last year at a certain high school, there were

70

ninth graders on the honor roll and

150

tenth graders on the honor roll. This year, the number of ninth graders on the honor roll increased by

20 \%

and the number of tenth graders on the honor roll increased by

24 \%

. By what percentage did the total number of students on the honor roll increase? Round your answer to the nearest tenth (if necessary).

\newline

An investor has an account with stock from two different companies. Last year, his stock in Company A was worth

\$ 2000

and his stock in Company B was worth

\$ 900

. The stock in Company A has increased

12 \%

since last year and the stock in Company

B

1 \%

. What was the total percentage increase in the investor's stock account? Round your answer to the nearest tenth (if necessary).

\newline

If you are buying at item at a store for a price of

\$ 42

, and there is a

5.6 \%

tax added on top, what would be the total amount due at the register, to the nearest cent?

\newline

94

is increased to

97

. What is the percentage by which the number was increased, to the nearest tenth of a percent?

\newline

Ashley measured a line to be

3

9

inches long. If the actual length of the line is

4

1

inches, then what was the percent error of the measurement, to the nearest tenth of a percent?

For the following set of data, find the population standard deviation, to the nearest hundredth.

\newline

139,126,51,61,77,109,112

For the following set of data, find the population standard deviation, to the nearest hundredth

102,138,107,112,125,91,134,110

For the following set of data, find the population standard deviation, to the nearest thousandth.

103,107,124,121,123,67,77,107,124

An organization determined most of its sales only occurred after at least

4

contacts. However,

44\%

of its salespeople gave up on a customer after the

1

st contact didn't make a sale. Of the remaining salespeople,

40\%

gave up after the

2

nd contact. Finally,

41\%

of the salespeople who made a

3

rd contact gave up when that call did not make a sale. To the nearest percent, what percent of the original salespeople made

4

or more contacts if the first

3

contacts did not result in sales? (Round to the nearest percent. Ignore the

\%

symbol when entering your answer. For example, if the answer is

\%

\%

Fabrizzio went shopping on Tuesday and decided to purchase a pair of pants that is

15\%

off the regular price. If he waits and buys the pants on Wednesday, he will receive an additional

5\%

off. What percent would Wednesday's sale price be of the original price for the pants? Round to the nearest whole percent.

\newline

1

\newline

81\%

\newline

85\%

\newline

95\%

\newline

105\%

Fabrizzio went shopping on Tuesday and decided to purchase a pair of pants that is

15\%

off the regular price. If he waits and buys the pants on Wednesday, he will receive an additional

5\%

off. What percent would Wednesday's sale price be of the original price for the pants? Round to the nearest whole percent.

\newline

1

\newline

81\%

\newline

85\%

\newline

95\%

\newline

105\%