Time
for MATH MINUTE! (provide your favorite theme music here).
Get
out your paper & pencil because I have a new puzzle for you!!
PUZZLE #20(rev.)
NO, NO! Not that one!! Feb. 26
– Mar. 2
A train
leaves St. Louis at 8:00am and travels east at 30 mph. At this same time
another train leaves a train yard which is 210 miles east of St. Louis and
heads west at 40 mph on the same track. At exactly the same time a fly leaves
the front of the first train engine and heads east along the track at 60 mph
until it reaches the front of the engine on the second train, then it reverses
direction and heads back towards the first train. It continues to fly back and
forth between the trains until they crash head-on and the fly is sadly smashed
in the accident.
We
are of course concerned about only one thing.
How
far did the fly fly?
You
may assume that the track is straight, and the trains and the fly are doing
their respective speeds instantly at 8:00am.
Have
fun!
Send your
comments, ideas and solutions before Monday to this email address, and be sure to
put < MM > in the subject line: parksjm@potsdam.edu
Visit
us here online at http://www2.potsdam.edu/parksjm/MM.htm
to see the results every Monday.
See
you next time on MATH MINUTE! (theme music fades out here).