Question 1195876
FirstBrand, L % vinegar
SecondBrand, H % vinegar
M ml. of T % vinegar wanted
If using v ml. of the SecondBrand, then M-v ml. of FirstBrand.


{{{highlight_green(L(M-v)+Hv=TM)}}}

{{{LM-Lv+Hv=TM}}}

{{{Hv-Lv=TM-LM}}}

{{{v(H-L)=M(T-L)}}}

{{{highlight(v=M((T-L)/(H-L)))}}}


Given information 
L=9
H=14
T=13
M=360
-
Unknown information
v, how much of the H % vinegar dressing