A bus, one hour after starting, meets with a roadblock that detains it for 30 minutes, after which he proceeds at 3/4 of its former speed and arrives 3.5 hours late. Had the roadblock been 144 kilometers farther along the road, it would have arrived only 3 hours late.
What is the length of the trip?
Clarification: The roadblock always detains a bus for 30 minutes and the bus then proceeds at 3/4 of the original speed.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
No explanations have been posted yet. Check back later!