Question 1089928
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Kentucky bluegrass worth ​$10 per pound and ryegrass worth $ 14 per pound. The mixture is to sell for ​$11 per pound. Find how much of each should be used to make a 360​-pound mixture.
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Kentucky bluegrass worth ​$L per pound and ryegrass worth $ H per pound. The mixture is to sell for ​$T per pound. Find how much of each should be used to make a M​-pound mixture.
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x, how many pounds of L dollar per pound seeds
M-x, how many pounds of the H dollar per pound seeds

{{{Lx+H(M-x)=T*M}}}
{{{Lx+HM-Hx=TM}}}
{{{Lx-Hx=TM-HM}}}
{{{Hx-Lx=HM-TM}}}
{{{(H-L)x=HM-TM}}}
{{{highlight(x=(HM-TM)/(H-L))}}}


Substitute using {{{system(L=10,H=14,M=360,T=11)}}}  and evaluate x and M-x.