You mix 335 gallons of a mixture containing 4 wt% NaCl (sodium chloride) and 96 wt% water (solution density = 1.0253 g/cm3) with a unknown volume of solution that is 26 wt% NaCl and 74 wt% water (solution density = 1.1944 g/cm3). You want to produce a mixture containing 19 wt% NaCl. Find the volume of the second feed solution.