One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in :
Created: 6 years ago |
best des
Let the slower pipe alone fill the tank in x min
Then, faster pipe will fill it in x/3 min
So, slower pipe in 1 minute can fill = 1/x part of the tank
and faster pipe in 1 minute can fill = 3/x part of the tank
again, together in 1 minute can fill = 1/36 part of the tank
As per question,
1/x + 3/x = 1/36
∴ x = 144 min (Ans:)
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