Question: In determining the specific gravity of an object, its weight in air is found to be A = 36 pounds and its weight in water

In determining the specific gravity of an object, its weight in air is found to be A = 36 pounds and its weight in water is W = 20 pounds, with a possible error in each measurement of 0.02 pound. Find, approximately, the maximum possible error in calculating its specific gravity S, where S = A/ (A - W).

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