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Jim's music store bought a guitar at wholesale price $1,200 . Jim marked the price up 50% . Find the amount of mark-up and the list price.

  1. 600%
  2. $1,800

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The Auto Resale Store bought Pablo's Toyota for $8,500 . They marked the price up 35% . Find the amount of mark-up and the list price.

  1. $2,975
  2. $11,475

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Key concepts

  • Sales tax applications involve finding a percent of an original price and adding it to the original price to get a total. See [link] .
  • Commission applications involve finding a percent of sales. See [link] .
  • Discount applications involve subtracting a percent of an original price. See [link] .
  • Mark-up applications involve adding a percent of a wholesale price. See [link] .

Practice makes perfect

Solve Sales Tax Applications

In the following exercises, find the sales tax and the total cost.

The cost of a pair of boots was $84 . The sales tax rate is 5% of the purchase price.

  1. $4.20
  2. $$88.20

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The cost of a refrigerator was $1,242 . The sales tax rate is 8% of the purchase price.

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The cost of a microwave oven was $129 . The sales tax rate is 7.5% of the purchase price.

  1. $9.68
  2. $138.68

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The cost of a tablet computer is $350 . The sales tax rate is 8.5% of the purchase price.

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The cost of a file cabinet is $250 . The sales tax rate is 6.85% of the purchase price.

  1. $17.13
  2. $267.13

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The cost of a luggage set $400 . The sales tax rate is 5.75% of the purchase price.

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The cost of a 6 -drawer dresser $1,199 . The sales tax rate is 5.125% of the purchase price.

  1. $61.45
  2. $1,260.45

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The cost of a sofa is $1,350 . The sales tax rate is 4.225% of the purchase price.

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In the following exercises, find the sales tax rate.

Shawna bought a mixer for $300 . The sales tax on the purchase was $19.50 .

6.5%

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Orphia bought a coffee table for $400 . The sales tax on the purchase was $38 .

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Bopha bought a bedroom set for $3,600 . The sales tax on the purchase was $246.60 .

6.85%

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Ruth bought a washer and dryer set for $2,100 . The sales tax on the purchase was $152.25 .

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Solve Commission Applications

In the following exercises, find the commission.

Christopher sold his dinette set for $225 through an online site, which charged him 9% of the selling price as commission. How much was the commission?

$20.25

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Michele rented a booth at a craft fair, which charged her 8% commission on her sales. One day her total sales were $193 . How much was the commission?

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Farrah works in a jewelry store and receives 12% commission when she makes a sale. How much commission will she receive for selling a $8,125 ring?

$975

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Jamal works at a car dealership and receives 9% commission when he sells a car. How much commission will he receive for selling a $32,575 car?

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Hector receives 17.5% commission when he sells an insurance policy. How much commission will he receive for selling a policy for $4,910 ?

$859.25

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Denise receives 10.5% commission when she books a tour at the travel agency. How much commission will she receive for booking a tour with total cost $7,420 ?

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In the following exercises, find the rate of commission.

Dontay is a realtor and earned $11,250 commission on the sale of a $375,000 house. What is his rate of commission?

3%

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Practice Key Terms 9

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Source:  OpenStax, Prealgebra. OpenStax CNX. Jul 15, 2016 Download for free at http://legacy.cnx.org/content/col11756/1.9
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