Page 85 - New Medley 5 Semester 2
P. 85

Again, we consider the above fractions in a different way to convert them
                                                              1      1    100       1
        into percentages. Here, we also have                      =     ×        =     ×  100%     =  50%, so
                                                              2      2    100       2

        we can say that we multiply a fraction by 100 to convert it into percentage.

                                        1     1                 100             1
        \                                  =      ×  100%    =        %  =  33 %
                                        3      3                  3             3

        Example 1:  Convert the following into percentages.

                                    4                    13                     5                   13
                             (a)          (b)                    (c)      (d)
                                    5                    40                     7                   15

                                    4        4           20 
        Solution:            (a)       =        ×   100     % = 80%
                                    5        5 1            
                                           
                                                             
                                    13        13             5        65            1
                             (b)         =          ×  100 %       =      %  =  32 %
                                    40        40  2                    2            2
                                            
                                                                
                                    5        5                500             3
                                                        
                             (c)       =      ×  100 % =             % =   71 %
                                    7        7                  7             7

                                    13        13             20         260           2
                             (d)         =          ×  100     %     =       %  = 86 %
                                    15        15  3                      3            3
                                            
                                                                
        Converting Percentages into Fractions


        Think about 45%. We know, 45% means 45 out of 100.

                                                              9
                                               45         45          9
        \                            45% =           =            =
                                              100        100  20     20


        Thus,  to  convert  percentage  into  fraction,  write  the  percentage  as  a

        fraction  with  denominator  100 by  removing  % symbol  and  hence  reduce
        it to its simplest terms.



        Example 2:  Convert the following percentages into fractions.

                                                                                       2
                             (a)  60%    (b) 85%    (c)  16 %
                                                                                       3


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