document.write( "Question 1088403: A can do a certain job in 4 days and with B assistance he can do a job in 12/7 days. how long will b take to finish the job working alone \n" ); document.write( "

Algebra.Com's Answer #702659 by Fombitz(32388) $\"\"$ $\"About$

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Rate x Time= Output
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\n" ); document.write( " $\"R%5BA%5D%2A4=100\"$
\n" ); document.write( " $\"R%5BA%5D=25\"$
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\n" ); document.write( " $\"%28R%5BA%5D%2BR%5BB%5D%29%2A%2812%2F7%29=100\"$
\n" ); document.write( " $\"12%2825%2BR%5BB%5D%29=700\"$
\n" ); document.write( " $\"300%2B12R%5BB%5D=700\"$
\n" ); document.write( " $\"12R%5BB%5D=400\"$
\n" ); document.write( " $\"R%5BB%5D=400%2F12\"$
\n" ); document.write( " $\"R%5BB%5D=100%2F3\"$
\n" ); document.write( "So,
\n" ); document.write( " $\"R%5BB%5D%2At%5BB%5D=100\"$
\n" ); document.write( " $\"%28100%2F3%29%2At%5BB%5D=100\"$
\n" ); document.write( " $\"t%5BB%5D=3\"$ $\"days\"$ \n" ); document.write( "

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