document.write( "Question 1097081: a and b working together can do a given job in 4 days, b and c together can do the job in 3 days and a and c together can do it in 2.4 days. In how many days can each do the job working alone. \n" ); document.write( "

Algebra.Com's Answer #711485 by josgarithmetic(39666) $\"\"$ $\"About$

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Rates a, b, c in JOBS per DAY\r
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\n" ); document.write( "\n" ); document.write( " $\"system%28a%2Bb=1%2F4%2Cb%2Bc=1%2F3%2Ca%2Bc=1%2F2.4%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "-\r
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\n" ); document.write( "\n" ); document.write( " $\"system%284a%2B4b=1%2C3b%2B3c=1%2C24a%2B24c=10%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"system%284a%2B4b=1%2C3b%2B3c=1%2C12a%2B12c=5%29\"$
\n" ); document.write( "Try to use the first two of these equations to eliminate b. You'll get an equation in variables a and c, and use this with the last equation $\"12a%2B12c=5\"$ . \n" ); document.write( "

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