Solution of problem N2596 probability theory

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2596. At the first plant, out of every 100 machines, an average of 90 standard ones is made, on the second - 95, on the third - 85, and the products of these plants make up respectively 50, 30 and 20% of all the machines supplied to the store in the area. Bought the car was standard. What is the probability that it was produced at the second plant?

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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