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17 June, 01:31

Lúcia is using energy at a rate of 420 kilocalories (kcal) per hour (start text, h, end text,) ice skating. At what rate is Lúcia using energy in calories per minute left parenthesis, / frac cal / - end fraction, right parenthesis?

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  1. 17 June, 02:03
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    Answer: 7000 calories / minutes

    Step-by-step explanation:

    420 kilocalories / hour

    To convert kilocalories / hour to calories / minutes

    kilo means 1000 and 60 minutes is equivalent to 1 hour

    therefore

    = (420*1000 calories) / 60minutes

    = (420000 / 60) calories/minutes

    = 7000 calories / minutes
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