document.write( "Question 1186013: Sam and Justin together can do a work in 2 days. If they had to work separately, the time taken by Justin to do the work would be more than that of Sam by 3 days. In how many days cam Justin do the work alone? (Applying quadratic equations) \n" ); document.write( "

Algebra.Com's Answer #816906 by ikleyn(52800) $\"\"$ $\"About$

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\n" ); document.write( "Sam and Justin together can do a work in 2 days.
\n" ); document.write( "If they had to work separately, the time taken by Justin to do the work would be more than that of Sam by 3 days.
\n" ); document.write( "In how many days cam Justin do the work alone? (Applying quadratic equations)
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document.write( "Sam = x days\r\n" );
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document.write( "Justin = (x+3) days.\r\n" );
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document.write( "The combined rate equation is\r\n" );
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document.write( "     +  = .\r\n" );
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document.write( "The solution can be easily guessed MENTALLY:  x = 3 days.\r\n" );
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document.write( "ANSWER.  Sam can complete this job in 3 days, working alone.\r\n" );
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document.write( "         Justin can complete this job in 3+3 = 6 days, working alone.\r\n" );
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document.write( "CHECK.   +  =  =  =  = .    ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "Alternatively, you can reduce equation (1) to the standard quadratic equation form
\n" ); document.write( "and solve it formally EITHER using the quadratic formula OR by factoring.\r
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\n" ); document.write( "\n" ); document.write( "To see other similar solved problems, look into the lesson\r
\n" ); document.write( "\n" ); document.write( " - Using quadratic equations to solve word problems on joint work \r
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