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5 August, 17:46

Jessica is running a 10K. She alternates between running and walking each kilometer. She runs at a rate of 1 kilometer every 5 minutes. She walks at a rate of 1 kilometer every 15 minutes. How long does it take her to complete the race?

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  1. 5 August, 18:15
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    It takes Jessica 100 minutes to complete the race

    Explanation:

    Given:

    Total distance = 10 km

    Runs for 1 km every 5 minutes

    walks 1 km every 15 min

    Explanation

    It is given that she alternates between walking and running

    so Jessica will walk 5 km and run 5 Km

    Time taken by Jessica for walking

    she walks 5 km

    time taken to walk 1 km = 5 minutes

    now time taken to walk 5 km

    => 5 X 5

    =>25 minutes

    Time taken by Jessica for Running

    she Runs 5 km

    Time taken to run 1 km = 15 minutes

    Now time taken to run 5 km

    => 5 X 15

    =>75 minutes

    Total time taken = Time taken by Jessica for walking + Time taken by Jessica for Running

    =>25 minutes + 75 minutes

    => 100 minutes
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