To convert the rate from fluid ounces per week to fluid ounces per hour, you can use the following steps:
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Understand the time conversion: There are 24 hours in a day and 7 days in a week. Therefore, the total number of hours in one week is:
\[ 24 \text{ hours/day} \times 7 \text{ days/week} = 168 \text{ hours/week} \]
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Convert fluid ounces per week to fluid ounces per hour: You need to divide the total fluid ounces by the number of hours in a week:
\[ \text{Rate in fluid ounces/hour} = \frac{840 \text{ fluid ounces}}{168 \text{ hours}} \]
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Calculate the equivalent rate:
\[ \frac{840 \text{ fluid ounces}}{168 \text{ hours}} = 5 \text{ fluid ounces/hour} \]
So, the equivalent rate is 5 fluid ounces per hour.