perplexus.info :: Weights and Scales : Wrenches

Wrenches (Posted on 2004-07-02)

There are 4 wrenches just unpacked from a box. They all look the same. There might be one defective item which is either heavier or lighter. Fortunately there is a fifth one that is standard. If you can use a scale to weigh only 2 times, can you find out:

Is there a defective wrench?
If there is a defective item, is it heavier or lighter?

See The Solution Submitted by Brian Smith

Rating: 3.0000 (7 votes)

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

Subject	Author	Date
Scale or balance	john	2005-04-06 17:20:38
Cool Question	Lozza	2004-09-13 04:06:32
Here is solution...	Patricia Stamets	2004-07-04 22:59:23
re: Solution	Shadow	2004-07-04 16:41:36
re: A shot	Ady TZIDON	2004-07-03 02:13:26
A shot	rohit	2004-07-03 00:30:20
re(3): Balanced solution	Arunava Dutta	2004-07-02 11:00:30
re(2): Balanced solution	Eric	2004-07-02 10:52:04
re(2): Balanced solution	fwaff	2004-07-02 10:33:39
re: Balanced solution	Arunava Dutta	2004-07-02 10:31:49
Balanced solution	fwaff	2004-07-02 10:26:09
re: Solution - My solution	Arunava Dutta	2004-07-02 10:23:33
Solution	Eric	2004-07-02 09:17:57

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