Q:
      
      
         
            
If 1/8 of a pencil is black, 1/2 of the remaining is white and the remaining, 3/2cm is blue. Find the total length of the pencil?
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: A) 8 cms         
         
Explanation: Let the total length of the pencil = x cms
From the given data,
'x/8' is black
Remaining part = x - x/8 = 7x/8
1/2 of 7x/8 is white
=> 7x/16 is white (Remaining part is 7x/16)
And given that the remaining part is blue and is 3 1/2 cm = 7/2 = 3.5 cm
That remaining part = 7x/16
Therefore, 
7x/16 = 7/2
x = 16/2 = 8
Hence, the total length of the pencil = x = 8 cm.
       
      
      
      
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