11 - Distance Traveled By A Messenger From Rear To Front Then Back To Rear Of A Marching Battalion

Problem
A battalion, 20 miles long, advances 20 miles. During this time, a messenger on a horse travels from the rear of the battalion to the front and immediately turns around, ending up precisely at the rear of the battalion upon the completion of the 20-mile journey. How far has the messenger traveled?
 

Answer Key

 

Solution

 
 
 
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