6 pipes are required to fill a tank in 80 minutes. how long will it take if only 5 pipes of the same types are used.
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Step-by-step explanation:
6 pipes are used to fill the tanker in 80min
a(1) pipe are used to fill the tanker in 80/6 min
5 pipes are used to fill the tanker in 80/6×5 min.
therefore, Time taken by 5 pipes to fill the tanker = 80/6×5 min = 80/6×5×60 sec = 4000 sec .
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