Q:
      
      
         
            
The average of 7 consecutive numbers is 20. The largest of these numbers is :
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: C) 23         
         
Explanation: Let the numbers be x, x + 1, x + 2,  x + 3, x + 4, x + 5 and x + 6,
Then   (x + (x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) + (x + 6)) / 7 = 20.
or  7x + 21 = 140 or 7x = 119 or x =17.
Latest number = x + 6 = 23.
       
      
      
      
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