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Mary on the highway [#permalink]
01 May 2010, 08:31
67% (02:29) correct
33% (02:41) wrong based on 2 sessions
Mary passed a certain gas station on a highway while traveling west at a constant speed of 50 miles per hour. Then, 15 minutes later, Paul passed the same gas station while traveling west at a constant speed of 60 miles per hour. If both drivers maintained their speeds and both remained on the highway for at least 2 hours, how long after he passed the gas station did Paul catch up with Mary? A. 30 min B. 45 min C. 1 hr D. 1 hr 15 min E. 1 hr 30 min