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23 June, 10:14

After the first 15 minutes of laying cement you had used 1/5 of the bag. What is the rate you are laying cement in bags per hour? What is the unit rate

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  1. 23 June, 13:30
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    15*4=1 hour

    1/5*4=4/5 or 80% of the total bag

    you are laying 4/5 of a bag in 1 hour given the rate is constant
  2. 23 June, 13:51
    0
    1 hour=60 minutes

    So 15 minutes=1/4 of a hour

    Multiply 4 by 1/5=4/5 of the bag

    The unit rate is that in 1 hour, 4/5 of the bag is used
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