NeycuuRose NeycuuRose 29-11-2016 Mathematics contestada Pleaseee I need this Marie mixes 16 liters of 18% acid solution with a 27% acid solution to make a 21% acid solution How many liters of 27% solution did she use? a ) 8 liters b ) 12 liters c ) 13.7 liters d ) 16 liters