Question 1186327
100 pounds mixture, blend price $5.15 per pound
$7.4 per pound
$3.65 per pound


v, how much of the $7.4 per pound coffee
u, how much of the $3.65 per pound coffee (because directions say, "use two equations in two unknowns".)
100-v, how much the $3.65 per pound coffee



{{{system(u+v=100,3.65u+7.4v=5.15*100)}}}

-

{{{3.65(100-v)+7.4v=515}}}

{{{(7.4-3.65)v+365=515}}}

{{{v=(515-365)/(7.4-3.65)}}}

{{{highlight(v=40)}}}
{{{highlight(u=60)}}}


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For any example of this type, <a href="https://www.algebra.com/my/mixture-price-two-part-both-parts-unknown.lesson?content_action=show_dev">https://www.algebra.com/my/mixture-price-two-part-both-parts-unknown.lesson?content_action=show_dev</a>