document.write( "Question 1193094: Mr. Downey can build a wall in 9 hours. His son Carl can build the same wall in 18 hours. Mr. Downey started to build the wall, worked for 3 hours, and then stopped working. How many hours would Carl require to complete the wall? \n" ); document.write( "
Algebra.Com's Answer #825076 by josgarithmetic(39630)\"\" \"About 
You can put this solution on YOUR website!
Downey and Carl each worked separately.\r
\n" ); document.write( "\n" ); document.write( "If Carl's part requires x amount of hours,
\n" ); document.write( "\"%281%2F9%29%2A3%2B%281%2F18%29%2Ax=1\"\r
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\n" ); document.write( "\n" ); document.write( "\"1%2F3%2Bx%2F18=1\"\r
\n" ); document.write( "\n" ); document.write( "\"18%281%2F3%2Bx%2F18%29=18\"\r
\n" ); document.write( "\n" ); document.write( "\"6%2Bx=18\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28x=12%29\"
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