PERCENTAGE CHAPTER 1

                                 PERCENTAGE 
        
      Definition :  it is a method of expressing fraction or parts of quantity into an equivalent from.
                           
                           Percentage are expends interm of hundred’s.

                           Percentage is denoted by the sign ‘%’.

                           Formula to calculate percent

                           If we have to find y% of x,then

  Y% of x = x * y/100   

 In  The below table important conversion of percentage









2%= 1/50
3.125%=1/32
4%=1/25
5%=1/20
6.25%=1/16
8%=2/25
8.33%=1/12


10%=1/10
12%=3/25
12.5%=1/8
13.33%=2/15
14.28%=1/7
15%=3/20
16%=4/25

16.66%=1/6
20%=1/5
25%=1/4
33.3%=1/3
37.5%=3/8
40%=2/5
50%=1/2

60%=3/5
62.5%=5/8
66.5%=2/3
75%=3/4
80%=4/5
83.33%=5/6
87.5%=7/8

100%=1
120%=6/5
125%=5/4
133.33%=4/3

150%=2/3
175%=7/4
200%=2
Example:            
         20% of 300=?

Solution:   according to formula

                    20% of 300= 300*20/100

                       3*20 =60

       SIMPLE TECHNIQUES OF PROBLEM SOLVING

   TECHNIQUE 1:

                      Expressing percent  (X%) into fraction.
                          Required fraction  = X/100.
              
EXAMPLE 1: express 25% in fraction.

    SOLUTION : according to the formula,
                                 25%= 25/100
                                     = 1/4.

   EXAMPLE 2 : EXPRESS 84% IN FRACTION

   SOLUTION: 84%= 84/100

                                 = 21/25.
          
TECHNIQUE 2
         Expressing a fraction (x/y) in percent.
  Required percentage =( x/y*100)%.

Example 1 : convert 3/8 into percentage?

Solution according to the formula, requried percentage = (3/8*100)%
                                                         = 37.5%

Example 2 : convert  15/20  into percentage?

Solution:  (15/20*100)%
                 =75%.


For more details follow our web site www.ssc-ibps.com
                                                                
  

PERCENTAGE CHAPTER 1 PERCENTAGE CHAPTER 1 Reviewed by Honey on 14:10:00 Rating: 5

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