Ling lives 2 miles from school. It took him 15 minutes to bike from school to home. The first half of the distance he biked at a speed of 12

Question

Ling lives 2 miles from school. It took him 15 minutes to bike from school to home. The first half of the distance he biked at a speed of 12 mph. What was his speed for the remaining distance

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Khánh Gia 3 years 2021-09-02T06:48:07+00:00 2 Answers 2 views 0

Answers ( )

  1. Eirian
    0
    2021-09-02T06:49:34+00:00
    Reply

    Explanation:

    As we know that

    time = distance/speed

    The time used for firs half of the trip was

    (1 mi)(12 mi/hour) = 1/12 hours = 5 minutes

    The last half of the trip will took 10 minutes, 1/6 hour.

    Speed = distance/ time

    (1 mil) = (1/6h) = 6 mil/h

    so the speed for last half of the trip was = 6mph

    the average speed was

    (2mil)(1/4 hour) = 8 mil/hour

    So the ling’s average speed was 8mph.

  2. thienthi
    0
    2021-09-02T06:50:01+00:00
    Reply

    Answer:

    Explanation:

    As we know that

    time = distance/speed

    The time used for firs half of the trip was

    (1 mi)(12 mi/hour) = 1/12 hours = 5 minutes

    The last half of the trip will took 10 minutes, 1/6 hour.

    Speed = distance/ time

    (1 mil) = (1/6h) = 6 mil/h

    so the speed for last half of the trip was = 6mph

    the average speed was

    (2mil)(1/4 hour) = 8 mil/hour

    So the ling’s average speed was 8mph.As we know that

    time = distance/speed

    The time used for firs half of the trip was

    (1 mi)(12 mi/hour) = 1/12 hours = 5 minutes

    The last half of the trip will took 10 minutes, 1/6 hour.

    Speed = distance/ time

    (1 mil) = (1/6h) = 6 mil/h

    so the speed for last half of the trip was = 6mph

    the average speed was

    (2mil)(1/4 hour) = 8 mil/hour

    So the ling’s average speed was 8mph.

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