Question

Tap A and Tap B together can fill tank in 3 hours. Tap A alone can fill in 5 hours. Find the time taken by Tap B to fill the tank

Answer 1

Answer:2.542373

Step-by-step explanation:f a tap can fill an empty tank in t hours, it means that this tap can fill 1/t of the tank in 1 hour. You can always use this method on tank/pool/worker problems. Rest is simple math. Here is how:

A: Fills 1/3 of the tank in an hour.

B: Fills 1/5 of the tank in an hour.

C: Empty 7/50 of the tank in an hour.

(50/150) + (30/150) - (21/150) = 59/150 of the tank can be filled in an hour.

Which means the tank can be filled in 150/59 hours, approximately 2.542373 hours. 2 hours, 32 minutes, 32 seconds on an analog clock to be exact.

(I don't know how to use math symbols on a mobile device, thats why I replied with plain text)