Re: RPN maps to basic mathematic expressions nicely

Marco van de Voort wrote:

   ...

> I considered word-problems boring but easy IIRC.

   ...

Bob's regular commuter train gets him his suburban station at 6:00. His 
beautiful wife Alice leaves home just in time to meet him. Allow zero 
time for Bob to hop into the car and for Alice to turn around. Alice 
always drives at the same speed in both directions.

One day, Bob left work early and arrived at 5:00. Knowing that Alice 
won't be there, he begins to walk home (at constant speed, of course). 
At some point on the road, Alice and bob meet, and they do their 
wonderful trick of getting into the car, turning it around, and getting 
up to speed in no time flat. They arrived home 10 minutes before they 
normally would.

What is the ratio of Bob's walking speed to Alice's driving speed? There 
is a unique correct solution. Is this problem boring? Is it easy?

Jerry
-- 
Engineering is the art of making what you want from things you can get.
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