document.write( "Question 827070: If Anna and Jessica can clean house together in 6hrs and Anna can clean alone in 8hrs how long would it take Jessica to clean? \n" ); document.write( "

Algebra.Com's Answer #498420 by TimothyLamb(4379) $\"\"$ $\"About$

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\n" ); document.write( "rates:
\n" ); document.write( "x = anna
\n" ); document.write( "y = jess
\n" ); document.write( "---
\n" ); document.write( "x + y = 1/6 job/hr
\n" ); document.write( "x = 1/8 job/hr
\n" ); document.write( "---
\n" ); document.write( "x + y = 1/6
\n" ); document.write( "1/8 + y = 1/6
\n" ); document.write( "y = 1/6 - 1/8
\n" ); document.write( "y = 8/48 - 6/48
\n" ); document.write( "y = 2/48
\n" ); document.write( "y = 1/24
\n" ); document.write( "---
\n" ); document.write( "time = 1/rate
\n" ); document.write( "---
\n" ); document.write( "1/y = jessica's time to clean the house = 24 hours
\n" ); document.write( "---
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\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
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