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2015-05-21T19:16:03+08:00

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We are looking for the rate.
Rate= \frac{Percentage}{Base} = \frac{15}{75} = \frac{20}{100} =20%
a. The value of L is 20
b. The missing rate is 20%
c. The complete equation is the one above or if you want the sentence, 20% of 75 is 15.
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