perplexus.info :: Weights and Scales : The unplugged bath

The unplugged bath (Posted on 2002-07-03)

(This is an old chestnut of a puzzle, but with a slight twist)

It takes six minutes for just the cold tap to fill my bath with water.

The hot tap fills the bath at the same rate, but unfortunately (due to some strange plumbing) after the hot tap has been running for three minutes its supply of water shuts off for a full two and a half while the hot water tank refills and reheats - after the two and a half minutes, the hot tap commences dispensing water once again.

With the plug pulled out, a full bath empties (at a uniform rate) in only four minutes.

With the hot water tank full and the plug pulled out, how long will it take my bath to fill if I turn both taps on?

See The Solution Submitted by Nick Reed

Rating: 3.1250 (8 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
No Subject	Hayden Franki	2024-10-04 16:48:15
Problem Solution With Explanation	K Sengupta	2007-05-16 11:11:48
some thoughts on the problem	K Sengupta	2007-05-12 15:54:49
re: Solution	vije	2004-07-02 15:01:50
1980 s	vije	2004-07-02 14:58:24
??	sharlene	2003-02-07 15:15:00
Solution	Hershel	2003-01-22 16:25:22
No Subject	Cory Taylor	2002-12-20 05:58:43
Solution	Justin	2002-07-03 07:43:10
re(3): Maybe...	Nick Reed	2002-07-03 07:31:30
re(2): Maybe...	Dulanjana	2002-07-03 07:13:07
re: Maybe...	Nick Reed	2002-07-03 06:32:22
Maybe...	Dulanjana	2002-07-03 06:30:15
Drowning caterpillar	Happy	2002-07-03 06:09:03
hmm (2)	Cheradenine	2002-07-03 05:54:02
Woop	Nick Reed	2002-07-03 05:26:53
re: Solution?	levik	2002-07-03 05:01:37
hmm..	Cheradenine	2002-07-03 04:35:30
Solution?	Dulanjana	2002-07-03 04:24:40

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