document.write( "Question 1174994: ann, bella and cindy can do a piece of work in 20,30 and 60 days respectively. ann can do work in 15 days and bella in 20 days. if they work on it together for 4 days,then what is the fraction of work left? \n" ); document.write( "

Algebra.Com's Answer #800521 by ikleyn(52818) $\"\"$ $\"About$

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document.write( "As the problem is worded and presented, it is UNCLEAR from the question, who are that \"they\", who are mentioned in it.\r\n" );
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document.write( "Those, who write Math problems, MUST avoid such ambiguity.\r\n" );
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document.write( "But, if to assume that \"they\" are the three taken together, then in 4 days they will make\r\n" );
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document.write( "     =  =  = \r\n" );
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document.write( "of the job,  and, hence,    of the job left.     ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "By the way, the second sentence of the condition CONTRADICTS to the first one.\r
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\n" ); document.write( "\n" ); document.write( "From which TRASH BIN did you recover this \"problem\" ?\r
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