A tank can be filled by a tap in 20 min and by another tap in 60

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A tank can be filled by a tap in 20 min and by another tap in 60 min. Both the tape are kept open for 5 min and then the 1st tap is shut off. After this. how much time the tank will be completely filled?

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Economics

ISBN: 978-1285738321

12th edition

Authors: Roger A. Arnold

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Posted Date: Feb 27, 2020 12:14 AM

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A tank can be filled by a tap in 20 min and by another tap in 60

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