document.write( "Question 732901: \r
\n" ); document.write( "\n" ); document.write( "the cost of three note books and four pencils is $8.50.the cost of five notebooks and eight pencils is $14.50. determine the cost of one notebook and the cost of one pencil
\n" ); document.write( "

Algebra.Com's Answer #448186 by checkley79(3341)\"\" \"About 
You can put this solution on YOUR website!
3N+4P=8.50 MULTIPLY BY -2 & ADD.
\n" ); document.write( "5N+8P=14.50
\n" ); document.write( "-6N-8P=-17.00
\n" ); document.write( "---------------------
\n" ); document.write( "-N=-2.50
\n" ); document.write( "N=$2.50 ANS. FOR THE PRICE OF 1 NOTEBOOK
\n" ); document.write( "3*2.50+4P=8.50
\n" ); document.write( "7.50+4P=8.50
\n" ); document.write( "4P=8.50-7.50
\n" ); document.write( "4P=1.00
\n" ); document.write( "P=1.00/4
\n" ); document.write( "P=.$25 ANS. FOR THE COST OF 1 PENCIL.
\n" ); document.write( "PROOF:
\n" ); document.write( "5*2.50+4*.25=8.50
\n" ); document.write( "7.50+1.00=8.50
\n" ); document.write( "8.50=8.50
\n" ); document.write( "
\n" );