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0.28) Three pipes A, B and C are attached to a cistern. Acan fill it in 20 minutes and B can fill it in 30 minutes. C isa waste pipe. After opening both the pipes A and B, Riyaleaves the cistern to fill and returns when the cistern issupposed to be filled. But she found that waste pipe Chadbeen left open, she closes it and now the cistern takes5 minutes more to fill. In how much time the pipe C canempty the full cistern?(a) 26.8 minutes[c] 27.8 minutes[b] 25.8 minutes[d] 28.8 minutes |
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Answer» a is the answer. THANKYOU |
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