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From: shuju@eros.UUCP (ju Wang Burgess)
Newsgroups: net.puzzle,net.jokes.d
Subject: Re: a good interview question
Message-ID: <619@eros.UUCP>
Date: Fri, 22-Mar-85 13:48:27 EST
Article-I.D.: eros.619
Posted: Fri Mar 22 13:48:27 1985
Date-Received: Tue, 26-Mar-85 06:37:32 EST
References: <302@ssc-bee.UUCP> <410@cybvax0.UUCP>
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Xref: watmath net.puzzle:654 net.jokes.d:1011

> In article <302@ssc-bee.UUCP> thill@ssc-bee.UUCP (Tom Hill) writes:
> > Here is a good interview problem.  It can be a bit heartless to give
> > to a nervous interviewee but bewarned... a guy I met was actually
> > asked this!
> > 
> > 	You have to travel from town A. to town B.   The distance
> > 	between the two towns is 2 miles.  If you drive 30 mph for the
> > 	first mile, how fast do you have to drive the second mile in
> > 	order to average 60 mph?
> 
> There are two simple answers.
> 
> a) You cannot travel fast enough.  You have already consumed the entire
>    two minutes required to average 60 mph over the time it takes to make
>    the trip.
> 
> b) 90 mph.  You will then have travelled an average of 60 mph over the
>    DISTANCE of the trip.
> 
> There probably are other measures possible as well.
> -- 
> 
> Mike Huybensz		...decvax!genrad!mit-eddie!cybvax0!mrh

*** REPLACE THIS LINE WITH YOUR MESSAGE ***

I don't believe that the second solution would work as 'mph' stands for
Miles Per Hour, so the average 60 miles is measured over time, NOT 
DISTANCE.  I think (a) is the only possible answer.

Shu-Ju