Mathematics, 04.11.2021 17:10 reese12345
A tank can be filled by a pipe in 18 hours. Five hours after this pipe is opened, it is supplemented by asmaller pipe, which, by itself can fill the tank in 22 hours. Simultaneously, a drainpipe is opened, which, byitself, can completely empty the tank in 30 hours. Find the total time, measured from the opening of thelarger pipe, to completely fill the tank
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A tank can be filled by a pipe in 18 hours. Five hours after this pipe is opened, it is supplemented...
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