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25 January, 11:47

In order to remove water from a flooded basement, two pumps, each rated at 45 gallons per minute, are used. After half an hour, the one pump burns out, and the second pump finishes removing the water half an hour later. How many gallons of water were removed from the basement?

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  1. 25 January, 12:26
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    4050 gallons

    Explanation:

    In first half and hour both pumps are working property. There for it give, 45

    gallons per minute. Half and hour is equal to 30 minutes. After one pump was broken only one pump is working 30 minutes.

    For 1st 30 minutes, (2 pumps are working)

    Gallons = 45 * 30 * 2 = 2700 gallons

    2nd 30 minutes (1 pump is working)

    Gallons = 45*30*1 = 1350 gallons

    Total gallons = 2700+1350

    = 4050 gallons
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