a tank is filled by pipeA in 8 hours and is emptied by pipe B in 10 hours . how long will it take to fill the tank if both the pipes are opened together in the empty cistern
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5
Step-by-step explanation:
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0
Answer:
1/40
Step-by-step explanation:
Pipe A fill in 8 hours
Pipe B fill in 10 hours
1/8 + 1/10
= 5 - 4/40
= 1/40
= 40 hours
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