Question 1200795
Two Part Mixture Problem


M, how much mixture wanted, 500 grams
T, percentage of needed content wanted, 86%
H, percentage high concentrated available, 99%
L, percent low concentrated available, 70%
y, how much of the high concentration material to use, unknown
M-y, how much of low concentration material to use


{{{highlight_green(Hy+L(M-y)=TM)}}}


{{{Hy+LM-Ly=TM}}}

{{{Hy-Ly=TM-LM}}}

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

{{{highlight(y=M((T-L)/(H-L)))}}}
Substitute your given values, evaluate y, and use it to evaluate {{{M-y}}}.