Question 1142163
L, 0.9 dollars per pound
H, 1.6 dollars per pound
T, 1.30 dollars per pound for mixture
M, 175 pound mixture
x, quantity of pounds of the "H" price nuts
M-x, quantity of the "L" nuts


{{{highlight_green(L(M-x)+Hx=TM)}}}


{{{LM-Lx+Hx=TM}}}
{{{Hx-Lx=TM-LM}}}
{{{(H-L)x=TM-LM}}}
{{{highlight(x=(TM-LM)/(H-L))}}} and other , less expensive nut quantity, {{{M-x}}}.


Substitute your given values and evaluate.