document.write( "Question 1099667: A car dealer purchase 20 new automobiles for $ 8000 each. If he sells 16 of them at a profit of 20%, for how much must he sell the remaining 4 to obtain an average profit of 18% ? \n" ); document.write( "
Algebra.Com's Answer #714102 by richwmiller(17219)\"\" \"About 
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1.18*20*8000=188800
\n" ); document.write( "8000*1.2*16+4*x=188800
\n" ); document.write( "153600+4*x=188800
\n" ); document.write( "4*x=188800-153600
\n" ); document.write( "4*x=35200
\n" ); document.write( "x=35200/4=8800
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\n" ); document.write( "He must sell the last 4 cars for $8800 for an average profit of 18%
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