$N\,\, = \,\,\frac{{\frac{W}{w}strength\,\, \times \,\,d\,\, \times \,\,10}}{{eq.\,\,wt.}}$

$\, \Rightarrow \,\,\,\,\left( {\frac{{29.2\,\, \times \,\,10\,\, \times \,\,1.25}}{{36.5}}} \right)\,\, \times \,\,{V_1}\, = \,\,0.4\,\, \times \,\,200\,\,$

$\therefore \,\,\,{V_1}\,\, = \,\,8\,\,ml$