Q:
      
      
         
            
The price of a car is increased by 25%, by how much percent, must the new price of this car be decreased to restore its original price ?
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: A) 20%         
         
Explanation: Suppose that the original price of the car = Rs. x 
Then new price of the car
=> (x) + (x ×25/100) = Rs. 5x/4 
To restore the original price, the new price must be decreased by
5x/4 − x = x/4
So required percentage =(x/4)/(5x/4) × 100%
= 20%
       
      
      
      
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