Two pipes can fill the cistern in 10 hours and 12 hours respectively, while the third empty it in 20 hours. If all pipes are opened simultaneously, then in how many hours the cistern will be filled?
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Answered by
1
Answer:
the pipe will take 2 hours to fill the tank
Answered by
0
Answer:
Work done by all the tanks working together in 1 hour,
⇒110+112−120=215
Hence, tank will be filled in 152
= 7.5 hour.
Step-by-step explanation:
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