In article <200310130955.h9D9t7V24583@proapp.mathforum.org>, prem <firstname.lastname@example.org> wrote:
> dear sir > Please help me solving this problem > Two trains 200 miles apart are moving toward each other; > each one is going at a speed of 50 miles per hour. > A fly starting on the front of one of them flies back and forth > between them at a rate of 75 miles per hour. It does this until the > trains collide and crush the fly to death. What is the total distance > the fly has flown?And the number of iteration made by the fly? > > > The solution is simple, using s=t*v, but is ther another way > of solving it by trough limit? > > from > prem > >
Yes, it can be solved by summing a geometric series.