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15 May, 04:20

If a car travels 30 mi. north for 30 min., 60 mi. east for 1.0 hour, and 30 mi. south for 30 min., what is the average speed

of the car over the first two legs of the trip?

60 mph

50. mph

53 mph

53.3 mph

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Answers (1)
  1. 15 May, 06:40
    0
    Answer: 60mph

    Explanation:

    Given the following:

    First leg travel:

    Distance = 30 miles

    Time of travel = 30 minutes = 0.5 hour

    Second leg travel:

    Distance = 60 miles

    Time of travel = one hour

    Average speed:

    Speed = total Distance / time of travel

    Total distance in miles = (30 + 60) miles = 90 miles

    Total time of travel = 1 hour + 0.5 hour = 1.5 hours

    Average speed = total distance traveled / total travel time

    Average speed = 90 miles / 1.5 hours

    Average speed = 60 miles / hour

    = 60mph
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