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September 19, 2014

September 19, 2014

Posted by **DANIELLE** on Tuesday, June 12, 2007 at 1:05pm.

Assume temporarily that John traveled at a constant speed of 55 mph and that was his maximum speed. Then in 45 minutes (8:15 am to 9:00 am), he would have traveled

55 * 3/4 = 41.25 miles and would not have made it to his office. But this contradicts the known fact that he must have traveled more than 55mph. Since he did make it to his office which is 60 miles away, he must have traveled more than 55 mph

Good job.

Thanks very much

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