Solving a problem in chemistry section 4 point 73

Solving a problem in chemistry section 4 point 73

73. At the initial moment of the reaction: CO (g) + H2O (g) ↔ CO2 (g) + H2 (g)
concentrations were equal (mol / dm3): [CO] = 0,30; [H2O] = 0,40; [CO2] = 0,40; [H2] = 0,05. Calculate the concentration of all substances when reacted 50% water.

Additional information:

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)