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Percentage-Increase

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					Percentage Increase

    (and decrease)
      What is to be learned?
• How to calculate amounts after
  percentage change
          Percentage Increase
Harry earns £800 per month
He gets a pay rise of 15%.
New wage?
          Pay rise = 15% of £800
                   = 0.15 X 800
Change to          = £120
decimal    New Pay = 800 + 120
                  = £920
      Percentage Decrease
Lucinda works in Tesda and receives 15%
discount on anything she buys.
How much would she pay
for a TV priced £600.

  15% of £600
= 0.15 X 600
= £90
Discount Price = 600 – 90
               = £510

				
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posted:2/21/2012
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