document.write( "Question 1013228: Mario and Julio are working together to detail cars. When they work together they can wash 7 cars in 2 hours. If Mario works alone he can detail 5 cars in 3 hours. If Julio works alone, how long will it take him to detail 12 cars? \n" ); document.write( "

Algebra.Com's Answer #629479 by ikleyn(52909) $\"\"$ $\"About$

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\n" ); document.write( "Mario and Julio are working together to detail cars. When they work together they can wash 7 cars in 2 hours.
\n" ); document.write( "If Mario works alone he can detail 5 cars in 3 hours. If Julio works alone, how long will it take him to detail 12 cars?
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document.write( "Let m be Mario's rate when he works alone, and j be Julio's rate when he works alone. \r\n" );
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document.write( "From the condition, \r\n" );
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document.write( "m =  ,\r\n" );
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document.write( "m + j =  .\r\n" );
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document.write( "Hence, j = (m+j) - m =  =  =  \r\n" );
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document.write( "Therefore, if Julio works alone, it will take for him   :  =  hour to wash 12 cars.\r\n" );
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