A sugar solution of 60kg has 20 sugar in it How much sugar must be added in this to make it half of ...........

Explanation:

20% of 60kg = 12
Sugar = 12
Water= 48
Now if we add only sugar then the value of water will be constant and that will be 50% of solution
So : 50% = 48
100%= 96 new solution
Now 96-60= 36kg

Hence, option 4 is the correct answer.