Question

A cisten can be filled by an inlet pipe in 6 hours and a emptied by an outlet pipe in 10 hours after 3 hours the outlet pipe is closed how much time will the inlet pipe take to fill up the remaining part of the trunk​

Answer 1

Answer:

If you mean A and B are opened for 3 hours starting with an empty tank,

then 3(1/6 - 1/10) = 1/5 of tank is filled after 3 hours and B is then closed

So, 4/5 of tank needs to be filled by A which fills at 1/6 of the tank per hour.

Let H = hours needed, H/6 = 4/5, H = 4 and 4/5 hours or 4 hours & 48 min

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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