Over a Specified Distance, Speed Varies Inversely with Time

question 135

Multiple Choice

Over a specified distance, speed varies inversely with time. If Joe can drive from his house to his office in 40 minutes at an average speed of 40 miles per hour, what average speed is needed to
Drive the same distance in half an hour? If necessary, round your answer to the nearest tenth.

• A)50 miles per hour
• B)60 miles per hour
• C)30 miles per hour
• D)53.3 miles per hour

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