A sample which is weighing 0.3375 g and containing NaHCO3 (84.01 g/mol), Na2CO3 (106.0 g/mol) and inert material is dissolved and titrated with the 0.1014 M HCl. The first end point volume (phenolphthalein end point) is 11.60 mL and the second end point volume (bromocresol green end point) is 41.93 mL. Determine the weight percentages of NaHCO3 and Na2CO3.