Mathematics Problem Of the Week

Spring 2006

POW #2

Driving in the SLU Lane

 

 

Text Box: 100 One day, Albert turns onto an unfamiliar and deserted highway.  Driving along he spots a 100 km marker.  Mistaking it for a speed limit, Albert starts driving at exactly 100 km/hr.  A while later he reaches the 98 km marker and immediately drops his speed to 98 kph.  Soon, up comes the 96 km marker, where Albert immediately slows down to 96 kph.  Then there's the 94 km Text Box: 98 marker, and Albert slows down to 94 kph.  Albert continues in this way (with markers every 2 km) until he reaches the end of the road and the 0 km marker, where he stops.  

 

How long does Albert's journey take from the time he passes the original Text Box: 96 100 km marker and what is Albert's average speed for the journey?

 

 

 

 

 

 

ps. Don't try this on the 401.

             Due Friday, February 10th Noon

Solutions should be submitted to Dr. R. Lock's mailbox in the Math office or sent via e-mail to rlock@stlawu.edu.