An aqueous solution contains 32.7% kcl (weight/weight %). how many grams of water are contained in 100 g of this solution

Weight/weight percentage is the percentage of mass of solute from the mass of the whole solution

w/w % = 32.7 %

this means that in a solution of 100 g - mass of KCl is 32.7 g

since solution is made of water and KCl

then the mass of water is - 100 - 32.7 = 67.3 g

therefore in 100 g of solution - 67.3 g of the solution is water