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anonymous

  • 5 years ago

The Johnsons need a new living room couch. The couch they like costs $2,700. The salesperson told the Johnsons that the couch will be on sale next month for 20% off. If the sales tax rate in their city is 7.5%, how much will the Johnsons save including sales tax, if they wait until the couch goes on sale?

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  1. anonymous
    • 5 years ago
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    To find out the price of something with percent added or subtracted, multiply the original price by 1 + the percent converted to decimal or 1- the percent converted to decimal.

  2. anonymous
    • 5 years ago
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    Convert a percent to decimal by taking the percent and move the decimal two places to the left or multiplying it by .01.

  3. anonymous
    • 5 years ago
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    To find the difference between the two prices, calculate the non sale price and the sale price and just subtract one from the other. remember that the 20% off applies before you have to add in the 7.5% sales tax.

  4. amistre64
    • 5 years ago
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    Percent problems have 3 parts to them: (Percent) = (Part amount)/(Total amount) times 100. This can be written 3 ways to solve for any of the missing parts. Fs = 2700(20%) Fs = 2700(.2) Fs = 540. The Furniture on sale(Fs) is $540 off its original price. How much tax would that have been? T = 540(7.5%) T = 540(.075) T = 40.50 The tax is $40.50. Total savings is Fs + T: 540 + 40.50 = $580.50

  5. anonymous
    • 5 years ago
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    Let me know if this helps or if you're still stuck on something.

  6. anonymous
    • 5 years ago
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    thank you very much both of you(: i understand this way better but isnt this a porpotion (however you speell it) problem?

  7. amistre64
    • 5 years ago
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    proportions, fractions, and percents are all interrelated. They are like one big happy kentucky family :)

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