Multiple choice

The volume of a petrol tank is twice that of another. If we draw 25 litres from the first tank and add to the other tank, then volume in each tank will be the same. Find the volume of tank which has more petrol in it.

  1. 100 litres

  2. 50 litres

  3. 150 litres

  4. 25 litres
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A Correct answer
Explanation

Let the volume of the tank which has less petrol is x litres
 
other tank's volume which has more petrol  = 2x  litres
 
If we draw 25 litres from the tank which has more petrol and add to other tank which has less petrol then volume will be same,equation is 
 
                           2x - 25 = x + 25
 
 
                             2x- x  = 25 + 25 
 
                                    x   =  50
 
Volume of tank which has more petrol will be twice of the other, i.e. 2 x 50 = 100 litres.

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