A mass of 100 kg of filter cake contains 55 wt% solids and 45 wt% solution, where the solution consists of 32 wt% H3PO4, 7.5% w/w H2SO4 , the remainder being water. The filter cake is reslurried with water and subjected to a second filtration. The second filter cake contains 60 wt% solids and 40 wt% liquid, and all of the solids from the original filter cake are present in the new cake. If 5.7% of the phosphoric acid present in the original filter cake is retained in the liquid trapped in the second filter cake, calculate the mass of water used to reslurry the filter cake. Give your answer in kg to an accuracy of three significant figures.