Question 1100856
This is just like any two-part mixture problem.  So many have already been solved on the site.


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Make M pounds mix of y pounds of item worth H dollars per pound and x pounds of item worth L dollars per pound so that the mixture made is T dollars per pound.
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{{{x+y=M}}}
{{{y=M-x}}}
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{{{Lx+H(M-x)=T*M}}}-------equation in ONE unknown variable, x

{{{Lx+HM-Hx=TM}}}
{{{Lx-Hx+HM=TM}}}
{{{(L-H)x=TM-HM}}}
{{{multiply}}}{{{both}}}{{{sides}}}{{{by}}}{{{-1}}};
{{{(H-L)x=HM-TM}}}
{{{highlight(x=(HM-TM)/(H-L))}}}
and use the found value of x to evaluate y.


Substitute the given values for M, H, L, and T.


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Notice that the given exercise description starts with peanuts  $2.30 per pound and cashews worth $6.25 per pound and asks for a mixture worth $1.90 per pound.  This CANNOT happen.  The mixture can NOT be a lower price than either of the two prices for the starting materials.