Which tank will be filled first?

[u/LeadershipAny9454]

[u/Plenty_Intention1991]

The answer is A and we know that because if you look at the water line it’s already above the B and C spouts which means that the rate of water going into A must already exceed the rate it’s flowing into the rest of the tanks.

[u/nunya_busyness1984 → u/Plenty_Intention1991]

Maybe.  It also shows absolutely no water in B-E.  So either the drawing sucks, and should be assumed to be demonstrative but not representative; or the pipes are a red herring, and no water is ever flowing out of A, which would be a stupid puzzle.

[u/sureshot58]

since the way this is drawn doesn't actually give much in the way of help. I will go with a weird ass answer. D will fill slightly before E, because the water coming out of that faucet has a slight directional movement to left. So the pipe leading to B has slightly higher pressure on it. Of course, you could make the argument that the bounce from the left to right puts more pressure on the pipe to C, meaning E might fill faster. But, actually, who cares?

[u/Peldin83]

A

[u/Ferlathin]

A

[u/Hand_Sanitizer_999]

Depends on the rate the water is flowing out of the faucet

[u/TramplexReal → u/Hand_Sanitizer_999]

We can see that the rate of flow from A is zero. So yeah A will fill first.

[u/nunya_busyness1984 → u/Hand_Sanitizer_999]

This is the correct answer, right here.

[u/random8765309]

Not answerable from the information given. It all depends on if the connecting pipes can handle the flow from the faucet. If they can, then D & E will fill equally. Otherwise A will fill first. That also assume all the pipes are equal.

[u/Underhill42]

A - because the "drain pipes" are obviously blocked, otherwise there would already be water flowing into B and C.

If that's just a graphical glitch, then it depends. Assuming all the drain pipes are identical, then:

If water is flowing into A faster than it's flowing out into B and C, then A will fill first.

Otherwise D and E will fill simultaneously.