document.write( "Question 56595: Hans paid $1.50 each for programs to the game. He sold all but 20 of them for $3.00 each and made a profit of $15.00. How many programs did he buy?\r
\n" ); document.write( "\n" ); document.write( "I tried the equation: 1.50x + 3(x-20)=15.00\r
\n" ); document.write( "\n" ); document.write( "I don't think this is right? Can you help me? Thank You.
\n" ); document.write( "The ISBN number that I typed is exactly correct.
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Algebra.Com's Answer #38396 by checkley71(8403)\"\" \"About 
You can put this solution on YOUR website!
1.50X+15.00=(X-20)3.00
\n" ); document.write( "1.50X+15.00=3X-60.00
\n" ); document.write( "1.50X-3X=-60.00-15.00
\n" ); document.write( "-1.50X=-75.00
\n" ); document.write( "X=-75.00/-1.5
\n" ); document.write( "X=50 PROGRAMS WERE BOUGHT & 30 SOLD.
\n" ); document.write( "PROOF
\n" ); document.write( "50*1.50+15.00=(50-20)3.00
\n" ); document.write( "75.00+15.00=30*3.00
\n" ); document.write( "90.00=90.00
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