New tires on the front of your car will wear out after 21,000 miles, while
new tires on the rear will wear out after 29,000 miles. Suppose you have 5
identical new tires (four installed and one spare). What is the maximum
distance you can drive, assuming you can freely change tires at any time?

Midshipmen submitting correct answers (with explanations) by noon on
Wednesday, October 11, win a cookie. The best solution will be posted on
the problem bulletin board.


A solution is "correct" if it gives the correct answer and explains why
it's correct. A solution is "best" if it includes the clearest correct
explanation. Submit solutions to Prof. Wardlaw at mathprob@usna.edu
(please no attachments!) or via the mailbox in Chauvenet 301.

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The best solution to problem #114 submitted on time came from Midn. 3/c
Supple: 14 days for Alice to find Bob. 10 day solutions came from LCDR
Skufca, Andrei Garcia (son of Prof. Garcia) and late from 4/c Foster. Mr.
Garcia's solution is posted on the bulletin board in the Chauvenet lab
deck corridor. This was Macalester Problem of the Week #915