document.write( "Question 1124812: A coffee company wants a new flavor of Cajun coffee. How many pounds of coffee worth $7 a pound should be added to 30 pounds of coffee worth $4 a pound to get a mixture worth $5 a pound? \n" ); document.write( "

Algebra.Com's Answer #741112 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = pounds of $7/pound coffee needed
\n" ); document.write( " $\"+%28+7x+%2B+4%2A30+%29+%2F+%28+x+%2B+30+%29+=+5+\"$
\n" ); document.write( " $\"+7x+%2B+120+=+5%2A%28+x+%2B+30+%29+\"$
\n" ); document.write( " $\"+7x+%2B+120+=+5x+%2B+150+\"$
\n" ); document.write( " $\"+2x+=+30+\"$
\n" ); document.write( " $\"+x+=+15+\"$
\n" ); document.write( "15 pounds of $7/pound coffee needed
\n" ); document.write( "ЧЧЧЧЧЧЧ
\n" ); document.write( "Check:
\n" ); document.write( " $\"+%28+7%2A15+%2B+120+%29+%2F+%28+15+%2B+30+%29+=+%28+105+%2B+120+%29+%2F++45+\"$
\n" ); document.write( " $\"+225%2F45+=+5+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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