Lesson 28 Section 2 ## Percent increase or decreaseExample 1. A blouse that usually sells for $32 is on sale at 25% off. How much do you pay?
Example 2. A VCR that usually sells for $180 is being sold at a
taken off. A third of 180 is 60. (Lesson 16, Question 1.) You will pay $180 − $60 = $120. Example 3. A CD that last week sold for $15 now costs 10% more. How much does it cost now?
$15 + $1 Example 4. Calculator problem. An item costs $39.95, and the tax
That is, press the + key. Do not press = . See
You will pay $43.45. Alternatively, the total cost is 100% of the item plus 8.75%, which is a total of 108.75%. Press
Example 5. Calculator problem Marlene's rent was $672.50. It was reduced by 6½%. What is her present rent?
See
Her present rent is $628.79. Estimations When using a calculator, and in general, the student should have some idea as to where the answer lies. With a calculator it is very easy to press a wrong button. Example 6. How much is 26 $
Example 7. How much is 49 $1,020 $102 $10
Example 8. 98 is approximately what percent of 204? 16% 48% 52% 89%
Example 9. What percent of 40 is 11? 6% 24% 27% 9%
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