text: # SSAT Middle Level Math : How to find the part from the whole with percentage
  
  ## Example Questions
  
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  ### Example Question #1 : How To Find The Part From The Whole With Percentage
  
  The sales tax rate for a particular locality is 9%. How much will be paid after tax for $154.92 worth of groceries? Possible Answers: Correct answer: Explanation: Multiply the price of the groceries before tax -$154.92 - by the decimal equivalent of 9% , which is 0.09. Round this tax to the nearest hundredth (cents), then add to the price of the groceries.
  
  Tax:
  
  Price after tax:
  
  ### Example Question #2 : How To Find The Part From The Whole With Percentage
  
  What is 250% of 750?
  
  Explanation:
  
  Taking 250% of a number is the same as multiplying that number by 2.5. We therefore take the product:
  
  ### Example Question #2 : How To Find The Part From The Whole With Percentage
  
  The product of two whole numbers is 12. Their difference could be
  
  Explanation:
  
  The first thing to do is to determine what two numbers multiply to give you 12.
  
  1 and 12
  
  2 and 6
  
  3 and 4
  
  Now find the difference between each of those pairs.
  
  The difference could be 1, 4, or 11.  Only 4 is an answer choice.
  
  ### Example Question #4 : How To Find The Part From The Whole With Percentage
  
  What is 30% of 150?
  
  Explanation:
  
  One way to go about solving this problem is to convert the percent into a decimal and multiply your whole number by that in order to get your answer. When converting a percent into a decimal, move the decimal point two spaces to the left:
  
  30% = 0.30
  
  Then, multiply this number times 150:
  
  ### Example Question #5 : How To Find The Part From The Whole With Percentage
  
  If  is  of , what is  of ?
  
  Explanation:
  
  We can solve for  with the algebraic equation:
  
  We can then calculate  of :
  
  ### Example Question #6 : How To Find The Part From The Whole With Percentage
  
  What is  of ?
  
  Explanation:
  
  We can convert  to  or . We can then calculate .
  
  ### Example Question #67 : Arithmetic
  
  Susan has a coupon for 10% off any one item at her favorite department store. There is also a storewide sale of 50% off all purchases.
  
  If Susan wants to by a shirt originally priced at $42, how much will she pay? Possible Answers:$37.80
  
  $16.50$20.00
  
  $21.00$18.90
  
  \$18.90
  
  Explanation:
  
  The storewide sale discounts the shirt by 50%:
  
  Susan also has the 10% off coupon, so she's really paying 90% of the cost of the shirt:
  
  ### Example Question #7 : How To Find The Part From The Whole With Percentage
  
  What is  of  ?
  
  Explanation:
  
  of   can be rewritten as
  
  ### Example Question #8 : How To Find The Part From The Whole With Percentage
  
  What is  of  ?
  
  Explanation:
  
  of  is equal to:
  
  Cross-cancel:
  
  ### Example Question #9 : How To Find The Part From The Whole With Percentage
  
  What is 8,000% of 9,000?
  
  Explanation:
  
  Taking 8,000%, as a decimal, is equivalent to multiplying it by , so 8,000% of 9,000 is equivalent to
  
  .
  
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