document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1107589>Question 1107589</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve: rex can paint a motel room in 3h and carl can do it in 6h. they work together for 1h. how long will it take rex to finish the job alone?\r<BR>\n" );
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document.write( "please help me. i've tried to get this and i can't understand.\r<BR>\n" );
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document.write( "thank you so much! </SPAN>\n" );
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document.write( "solve: rex can paint a motel room in 3h and carl can do it in 6h. they work together for 1h. how long will it take rex to finish the job alone?\r<BR>\n" );
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document.write( "please help me. i've tried to get this and i can't understand.\r<BR>\n" );
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document.write( "thank you so much!<BR>\n" );
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document.write( "The key is to determine how much work they each do per unit of time.\r<BR>\n" );
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document.write( "Rex:  1/3 of a room per hour<BR>\n" );
document.write( "Carl:  1/6 of a room per hour\r<BR>\n" );
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document.write( "Together:   (1/3) + (1/6) = (2/6) + (1/6) = 3/6 = 1/2 of a room per hour\r<BR>\n" );
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document.write( "They work together for 1hr: that's 1/2 of the room.\r<BR>\n" );
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document.write( "So how long will it take Rex to finish the remaining 1/2 of the room?\r<BR>\n" );
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document.write( "(Amount of work)/(rate of work) = time to complete that work<BR>\n" );
document.write( "(1/2 room) / (1/3 room per hour) = ?   hours\r<BR>\n" );
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document.write( "——\r<BR>\n" );
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document.write( " </SPAN>\n" );
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