document.write( "Question 28325: jane takes 4 hours to do a job that mary can do in 3.5 hours and that sara can do in 3 hours. what is marys rate of work?\r
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document.write( "A. 1/4
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document.write( "B. 1/3
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document.write( "C. 2/7 \n" );
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Algebra.Com's Answer #15395 by josmiceli(19441) You can put this solution on YOUR website! Trick question \n" ); document.write( "It tells you what Mary's rate of work is. It's 1 job per 3.5 hrs \n" ); document.write( "Tht's 2 jobs per 7 hours or 2/7 jobs per 1 hour. \n" ); document.write( " |