document.write( "Question 1184541: Mr. Santos can mow his lawn in 4 hours. Mr. Cruz can do the same job in 5 hours. How long will it take them to do the job if they work together? \n" ); document.write( "

Algebra.Com's Answer #815165 by ikleyn(52788) $\"\"$ $\"About$

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document.write( "     +  = 1\r\n" );
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document.write( "Multiply both sides by 20.\r\n" );
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document.write( "    5t + 4t = 20\r\n" );
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document.write( "      9t    = 20\r\n" );
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document.write( "       t    =   hours = 2   hours.    ANSWER\r\n" );
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