Question

pipe b takes 6 hours to empty a full tank. while it takes 8 hours to empty the same tank when operating along with pipe a. pipe a fills at the rate of 4 litres per minute. what is the volume of the tank​

Answer 1

Answer:

The fraction of the tank filled in one hour with both pipes, the pipe filling it and the pipe draining it open = (1/6) - (1/8) = (4 - 3)/24 = 1/24 of the whole.

So the tank would take 24 hours to fill with both pipes operating.