how much water should be added to 50g glucose to obtain 12% glucose solution

how much water should be added to 50g of glucose to obtain 12% glucose solution
 

↵Mass of glucose (solute) =50 g Concentration of glucose solution = (Mass of solute / mass of solution) x 100  Therefore mass of solution = 50 x 100 /12 = 416.67 g   Mass of water which should be added to glucose = (416.67 -50) = 366.67 g 

↵Mass of glucose (solute) =50 g Concentration of glucose solution = (Mass of solute / mass of solution) x 100  Therefore mass of solution = 50 x 100 /12 = 416.67 g   Mass of water which should be added to glucose = (416.67 -50) = 366.67 g 

If w = water, then why wouldn't we use w+2 as the mass of solution. And then, 

12% = 50 *100/50+w 

yes its right

how to do that
 

x+50=12
percentage of glucose in water :
50/(50+x) X 100 =12
5000 = 12x +600
4400 = 12x
x = 36.66

Mass of solute=50g Concentration of solution=12% Let Mass of the solution be x, Concentration of solution= Mass of solute ------------------------- Mass of solution 12%= (50/x) × 💯 X= 5000/12 X= 426.67 Mass of the solution = 416.67g Mass of water= 416.67-50 366.67g