Question 1051864
w, price for wheat flour
r, price for rye flour


Transcribe the first and the second purchases.
{{{system(11w+13r=17.19,13w+13r=18.59)}}}



BEGIN with Elimination Method but finish any way you want.

{{{13w+13r-11w-13r=18.59-17.19}}}





{{{system(w=0.7,r=0.115)}}}