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9 September, 18:15

Edward cleaned a windowpane with a width of 5 feet and a length of 3 feet in 14 of an hour. What is the speed, in square feet per hour, at which Edward cleaned the pane?

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  1. 9 September, 20:23
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    There are a few ways to solve this problem.

    We know the areas is Area = Length x Width

    Area = 5 x 3 = 15 ft^2

    To find out the speed in square feet per hour we divide 15 / 14

    15 / 14 = 1.07142857143 ft^2 per hour
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