Question 116287
The formula is
( price per pound #1)(pounds #1) + (price per pound #2)(pounds #2)
equals (price per pound mixture)(pounds of mixture)
Let {{{x}}} equal pounds of $1.10 hamburger
{{{1.1*x + 1.8*50 = 1.3(50 + x)}}}
{{{1.1x + 90 = 65 + 1.3*x}}}
{{{.2x = 25}}}
{{{2x = 250}}}
{{{x = 125}}} pounds of #1.10 hamburger answer
check answer
{{{1.1*x + 1.8*50 = 1.3(50 + x)}}}
{{{1.1*125 + 1.8*50 = 1.3(50 + 125)}}}
{{{137.5 + 90 = 1.3*175}}}
{{{227.5 = 227.5}}}
OK