# When 56 grams of NaCl are dissolved in enough water to create a 125 gram solution, what is the solution's concentration, expressed in percent by mass?

$\text{Mass %}$ $=$ "Mass of solute"/"Mass of solution"xx100%
And thus $\text{Mass %, sodium chloride solution}$ $=$ (56*g)/(125*g)xx100% $=$ ??%