perplexus.info :: Just Math : From A to B

From A to B (Posted on 2002-05-15)

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)

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re: pure algebra

| Comment 3 of 14 |

Hmmm... How do you get y=124-2x ?
I get y=144-2x when I plug it in. Back to the notes to check myself...

Posted by levik on 2002-05-15 11:57:44

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