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.
I also arrived at y = 144  2x. This gives a total distance of 180 miles uphill (A to B), 144 miles level, and 0 miles downhill. This gives a total distance of 324 miles.

Posted by Ender
on 20020516 03:09:06 