document.write( "Question 893393: Thomas did a job in 4hrs and mary does the same job in six hrs how many hrs will it take both of them
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Algebra.Com's Answer #544141 by richwmiller(17219)\"\" \"About 
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a=4
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\n" ); document.write( "1/a+1/b=1/x
\n" ); document.write( "1/4+1/6=1/x
\n" ); document.write( "1/4+1/6=1/2.4
\n" ); document.write( "1/x=1/2.4
\n" ); document.write( "x=2.4
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