Question: A steam pipe 100 mm outside diameter is covered with two layers of insulating material, each 25 mm thick, the thermal conductivity of one

A steam pipe 100 mm outside diameter is covered with two layers of insulating material, each 25 mm thick, the thermal conductivity of one being three times that of the other. When the better insulating material is on the inside than when it is on the outside, the heat conducted is reduced by % (Correct upto two decimal places). Assume the same overall temperature difference in both cases.

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