document.write( "Question 1152018: Star Cups, a specialty coffee store, creates a special mix of two coffees at two different prices: $6.42 and $7.28 per pound each. How many pounds of the $7.28 coffee should be mixed with 7 pounds of $6.42 coffee to sell the mixture for $7.20 per pound?\r
\n" ); document.write( "\n" ); document.write( "I have the answer of 68.25 lbs but am a bit confused at the solution process. \n" ); document.write( "

Algebra.Com's Answer #773903 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+x+\"$ = pounds of $7.28 coffee needed
\n" ); document.write( "-------------------------
\n" ); document.write( " $\"+%28+6.42%2A7+%2B+7.28x+%29+%2F+%28+7+%2B+x+%29+=+7.2+\"$
\n" ); document.write( " $\"+%28+44.94+%2B+7.28x+%29+%2F+%28+7+%2B+x+%29+=+7.2+\"$
\n" ); document.write( " $\"+44.94+%2B+7.28x+=+7.2%2A%28+7+%2B+x+%29+\"$
\n" ); document.write( " $\"+44.94+%2B+7.28x+=+50.4+%2B+7.2x+\"$
\n" ); document.write( " $\"+.08x+=+5.46+\"$
\n" ); document.write( " $\"+x+=+68.25+\"$
\n" ); document.write( "68.25 pounds of $7.28 coffee are needed
\n" ); document.write( "Hope this is clear
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\n" ); document.write( "check:
\n" ); document.write( " $\"+%28+6.42%2A7+%2B+7.28x+%29+%2F+%28+7+%2B+x+%29+=+7.2+\"$
\n" ); document.write( " $\"+%28+6.42%2A7+%2B+7.28%2A68.25+%29+%2F+%28+7+%2B+68.25+%29+=+7.2+\"$
\n" ); document.write( " $\"+%28+44.94+%2B+496.86+%29+%2F+75.25+=+7.2+\"$
\n" ); document.write( " $\"+541.8+%2F+75.25+=+7.2+\"$
\n" ); document.write( " $\"+541.8+=+541.8+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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