SOLUTION: A train running at the speed of 45 km/hr took 12 seconds to pass a certain point.What was the length of the train?

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Question 625813: A train running at the speed of 45 km/hr took 12 seconds to pass a certain point.What was the length of the train?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
This is very easy to understand if you just restate it
as:
" Mark off a distance along the tracks which is equal
to the length of the train. At 45 mi/hr, the engine
covers this distance in 12 sec. What is the length
that was marked off?"
Note that +12+ sec x +1%2F60+ min/sec x +1%2F60+ hr/min
= +12%2F3600+ hrs
+d+=+45%2A%28+12%2F3600+%29+
+d+=+45%2A%28+1%2F300+%29+
+d+=+.15+ km
+.15+ km x +1000%2F1+ m/km = +150+
The train is 150 m long