Question 1204015
M mililiters of result mixture using
v miiliters of straight vinegar
M-v mililiters of the Italian Dressing, L% vinegar
-
T % vinegar in resulting mixture




{{{highlight_green(100v+L(M-v)=TM)}}}


{{{100v-Lv+ML=MT}}}

{{{(100-L)v=MT-ML}}}

{{{highlight_green(v=M((T-L)/(100-L)))}}}


Substituting the given values, {{{highlight(v=150((42-13)/(100-13)))}}}

{{{v=150(29/87)}}}

{{{v=150(1/3)}}}

{{{highlight(v=50)}}}----------ml. of the 100% vinegar