Saturday
May 30, 2015

Homework Help: math

Posted by Lindsay on Friday, November 30, 2012 at 12:54am.

A motorist travelling at a steady speed of 120km/h covers a section of the highway in 30min. After a speed limit is imposed he finds that when travelling at the maximum speed allowed he takes 20 min. longer than before to cover the same section.

Calculate the speed limit.

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