diluted solution ?:  w_dil = 50 weight % = 50g product/100g solution 
                       make = 1000ml from this solution
------------------------------------------------------------------
product = H(2)SO4 'acid sulfuric' MW=(S)32+4*16(O)+2*H(1)    = 98g
                                 (M)olecular(W)eight H(2)SO4 = 98g
product = H(2)O   ' aqua        ' MW=(H)2*1+1*16(O)          = 18g
------------------------------------------------------------------
solution  = soln

peter.vlasschaert@gmail,03/11/2016,version 1.0

Products : labo flask 1 : 'acid sulfuric' ,rho_acid =density = 1,84g/ml, w_acid = 96% weight
                flask 2 : ' aqua        ' ,rho_aq   =density = 1,00g/ml,

How to find  (y) ml flask 1 , (make - y) ml flask 2  ? find y

info : rho_* w_ * y = (g product/ml)*(g product/100g soln)*y

kill(all);

p1 : rho_acid*w_acid * y = (rho_acid*y+rho_aq*(make-y))*w_dil;

p2:solve(p1,y);

p3:part(p2,1);

p4:ev(p3,make=1000);

p5:rho_acid = 1.84;
p6:rho_aq   = 1;
p7:w_acid   = 0.96;
p8:w_dil    = 0.5;

p9:ev(p4,p5,p6,p7,p8);

p10:y_aq=ev(make - part(p9,2),make = 1000);

We get diluted soln 50 wt% ,take y ml =371.4ml flask 1 and
put other flask and take y_aq from flask 2 => total volume = make = 1000 

p11:vol_tot = ev(y+y_aq,p9,p10);