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Mr. Ishikawa left Houston at 3:00 P.M. and arrived in Dallas at 8:00 P.M., driving a distance of approximately 240 miles. During his trip, he took a one-hour dinner break. What was Mr. Ishikawa’s average speed?

 Jun 14, 2021
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It took Mr I   5 hours to drive 240 miles        avg speed   =   240 / 5 = 48  m /hr for the trip

 

    If we look at ONLY the time he was actually  driving, he drove 240 miles in 4 hours = 60 m/hr

 Jun 14, 2021

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