Increase Decrease,Sales Tax, Tip Percentage, and Sales Price

Percent Of Increase and Decrease

~There is two parts in the proportion

~The percent always goes over 100

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Sales Tax

  • Find the amount of tax by multiplying the percent tax (decimal value) by the original price
  • Add the tax amount to the original price to get the total
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Tip Percentage

  • Find the tip by multiplying percent (decimal value) by the total
  • Add the tip amount to the final total bill
  • Often times the tip is rounded to the nearest dollar
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Sales Price

  • The rate is usually given as a percent.
  • To find the discount, multiply the rate by the original price. To find the sale price subtract the discount from original price
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