document.write( "Question 324838: A seedman has seeds worth 50 per pound mixed with seeds worth 80 per pound. If he wishes to make a mixture of 30 pounds to sell at 75 per pound, how many pounds of each should he use? \n" ); document.write( "

Algebra.Com's Answer #232710 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let A be the $50/lb mix, B the $80/lb mix.
\n" ); document.write( "1. $\"A%2BB=30\"$
\n" ); document.write( "2. $\"50A%2B80B=75%2830%29=2250\"$
\n" ); document.write( "From eq. 1,
\n" ); document.write( " $\"A=30-B\"$
\n" ); document.write( "Substitute,
\n" ); document.write( " $\"50%2830-B%29%2B80B=2250\"$
\n" ); document.write( " $\"1500-50B%2B80B=2250\"$
\n" ); document.write( " $\"30B=750\"$
\n" ); document.write( " $\"highlight%28B=25%29\"$
\n" ); document.write( "Then from above,
\n" ); document.write( " $\"A=30-25\"$
\n" ); document.write( " $\"highlight%28A=5%29\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "Use 5 lbs of $50/lb mix, $25 of the $80/lb mix. \n" ); document.write( "

\n" );