Wastewater is filling barrels at the rate of 7 quarts per hour. the recycling facility picks up 25 full barrels on each trip, and each barrel holds 48 quarts of wastewater. how many days are between each pickup?

First, we know that 7 quarts = 1 hour to fill up
So, 48 quarts would take about 6.85 hours to fill up because 48/7=6.85
1 barrel holds 48 quarts which means again, it takes 6.85 hours to fill just one barrel.
25 barrels of 48 quarts are picked up at a time.
25 * 6.85 hours = 171.25 hours in one trip.
There are 24 hours in a day, so take 171.25/24 = 7.13 days.

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