Markups
Percent of Change
Interest Rate
Percent Error
Discounts
100

Cost to a store: $50

Markup: 10%

$55

100

12 inches to 36 inches

200%

100

Find the interest earned and find the account balance.

$600 at 5% for 2 years

$60

$660

100

Actual value: 13

Estimates value:126

Percent of error?

869%

100

An item costs $80 but you receive a 20% discount.  How much do you end up paying?

$64

200

Cost to a store: $80

Markup: 60%

$128

200

16 centimeters to 44.2 centimeters

176.3%

200

Find the interest earned and find the account balance.

$350 at 3% for 10 years

$105

$455

200

Actual:28

Estimated: 13

Percent of error 

53.57%

200

An item costs $69.80 but you receive a 60% discount.  How much is your final price?

$27.92

300

Cost to a store: $140

Markup: 25%

$175

300

1/4 to 1/2

100%

300

Find the interest earned and find the account balance.

$925 at 2.3% for 2.4 years

$51.06

$976.06

300

You estimate that there are 40 marbles in a jar.  The actual amount is 48 marbles.  Find the percent error.  Round to the nearest tenth.

16.7%


300

An item is on sale for 25% off and costs $40 on sale.  How much was the original costs?

$53.33

400

A store pays $90 for a watch.  What is the selling price hen the markup is 30%?

$117

400

Last week, you finished Level 2 of a video game in 32 minutes.  Today, you finish Level 2 in 28 minutes.  What is the percent of change?

12.5%

400

A savings account earns 5% simple interest per year.  The principal is $1200.  What is the balance after 4 years?

$1440

400

A researcher estimates that a fossil is 3200 years old.  Using Carbon-14 dating, a procedure used to determine the age of an object, the researcher discovers that the fossil is 3600 years old.  Find the percent error.

11.1%

400

An item is on sale for 5% off and costs $57 on sale.  How much was the original costs?

$60

500

A store pays $60 for an item.  Your friend buys the item for a 20% markup.  How much did your friend pay?

$72

500

Percent of increase from 27 to 34

25.9%

500

I=$30, P=$500, r=3%

Find the amount of time.

2 years

500

You estimate that a baby pig weighs 20 pounds.  The actual weight of the baby pig is 16 pounds.  Find the percent error.

25%

500

Which is the better price?

85% off $90

70% off $65

85% off $90

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