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1 January, 07:46

A girl runs up the down escalator in the mall. If the escalator is moving with a

velocity of 24 m/min and the girl is running with a velocity of 30 m/min, how far up the escalator can she go in 4 minutes?

A. 10 m

B. 30 m

C. 48 m

D. 24 m

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Answers (1)
  1. 1 January, 11:34
    0
    D. 24 m

    Explanation:

    Running up - velocity + 30 m/min

    Escalator 's moving down velocity - 24 m/min

    Sum velocity (30 - 24) = 6 m/min

    6 m/min * 4 min = 24 m
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