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From A to B (Posted on 2002-05-15) Difficulty: 5 of 5
A car drives downhill with the speed of 90 m/h. On a level road, the same car goes 72 m/h, and uphill it goes "only" 60 m/h.

It takes this car 5 hours to go from town A to town B. The return trip only takes 4 hours.

Find the distance between the two towns.

See The Solution Submitted by levik    
Rating: 3.8667 (15 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(2): Alternate approach | Comment 8 of 14 |
(In reply to re: Alternate approach by Cory Taylor)

> not like anyone will ever go this far back in the posts but,

Hehe, bless the "New Comments" search :)

When you say "hill" is the length of the graded section of the road, do you mean the total length of the graded road, or just the portion relating to the respective incline?

In any case, I didn't quite understand how you arrived at your formula.

  Posted by levik on 2002-11-25 10:39:20

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