document.write( "Question 979441: 1. a farmer bought 85 kg of fertilizer in 12 bags. some are 5 kg bag. the rest are 10 kg bags. how many 5 kg bags did he buy? \n" ); document.write( "
Algebra.Com's Answer #600728 by richwmiller(17219)\"\" \"About 
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x+y=12,
\n" ); document.write( "5*x+10*y=85
\n" ); document.write( "x=12-y
\n" ); document.write( "5*(12-y)+10*y=85
\n" ); document.write( "60-5y+10*y=85
\n" ); document.write( "5*y=25
\n" ); document.write( "y=5
\n" ); document.write( "x=12-y
\n" ); document.write( "x=7 at 5 and y=5 at 10
\n" ); document.write( "check
\n" ); document.write( "7+5=12
\n" ); document.write( "5*x+10*y=85
\n" ); document.write( "5*7+10*5=85
\n" ); document.write( "35+50=85
\n" ); document.write( "85=85
\n" ); document.write( "ok
\n" ); document.write( "codetick
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