25ml of 3.0N HCl and 75ml of 0.05N HCl when mixed together, the normality of the resulting solution is
0.055
0.35
0.787
3.05
5 ml of N HCl, 20 ml of N/2 H2SO4 and 30 ml of N/3 HNO3 are mixed together and volume made to one litre. The normality of the resulting solution is