document.write( "Question 1039218: Mobile-friendly - SOLUTION: A grocer sells 15 grams of nuts at P0.75 per gram. How many grams of nuts at P1.00 per gram must he sell to make his average price 0.85? \n" ); document.write( "

Algebra.Com's Answer #653961 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = grams of nuts @ P 1.00 / gram
\n" ); document.write( "he must sell to average 0.85/gram
\n" ); document.write( "--------------------------------------
\n" ); document.write( " $\"+.85+=+%28+.75%2A15+%2B+1%2Ax+%29+%2F+%28+15+%2B+x+%29+\"$
\n" ); document.write( " $\"+.85%2A%28+15+%2B+x+%29+=+11.25+%2B+x+\"$
\n" ); document.write( " $\"+12.75+%2B+.85x+=+11.25+%2B+x+\"$
\n" ); document.write( " $\"+.15x+=+1.5+\"$
\n" ); document.write( " $\"+x+=+10+\"$
\n" ); document.write( "--------------
\n" ); document.write( "He must sell 10 grams of nuts @ 1.00 / gram
\n" ); document.write( "--------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+.85+=+%28+.75%2A15+%2B+1%2Ax+%29+%2F+%28+15+%2B+x+%29+\"$
\n" ); document.write( " $\"+.85+=+%28+.75%2A15+%2B+1%2A10+%29+%2F+%28+15+%2B+10+%29+\"$
\n" ); document.write( " $\"+.85+=+%28+11.25+%2B+10+%29+%2F+25+\"$
\n" ); document.write( " $\"+21.25+=+21.25+\"$
\n" ); document.write( "OK \n" ); document.write( "

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