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two pipes A and B can fill a cistern in 15 and 20 min,.while third pipe C can empty it in 30 min.if three pipes opened successively for one min each,how long wll it take to fill the cistern?
Read Solution (Total 3)
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- 36 MINUTES
- 8 years agoHelpfull: Yes(1) No(1)
- 35 MINUTES
- 8 years agoHelpfull: Yes(1) No(0)
- =1/15+1/20-1/30
=5/60
=12min Ans - 8 years agoHelpfull: Yes(0) No(0)
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