Thursday, October 28, 2010

Percentage

We can calculate percentage of any quantity by dividing the number by 100.calculation of percentage is used in our daily life whether it be business, offices or institutions.

In schools and college, percentage is used in assessing the marks acquired by students.

Let us see some example on how to calculate percentage.
Find 25percent of 80
     It is calculated as the following:
     (25/100)x 80
     =200/10
     =20
Hence 25 percent of 80 is 20.           
                                      
You may also be asked to find the percentage of 100kg of rotten potatoes out of 500kg.
Here you need to find how many percentage is rotten from 500kg if 100kg of potatoes are rotten.

Let's see how to calculate:
 (100/500)x100
  =100/5
  =20
Hence 20 percent of potatoes are rotten. 

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