Friday
October 24, 2014

Homework Help: Algebra

Posted by Steven on Thursday, May 20, 2010 at 3:35pm.

An elevator went to the do of a 180m building, stayed for 1 minute, then came down. The total time was 3.5 minutes. If the speed of the elevator when it went up was 1 m/sec less than when it came down, find both speeds (up and down).

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