Решение задачи N3943 теория вероятностей полная вероятн

3943. Watches are made in three factories and go to the store. The first plant produces 40% of products, the second - 45%, the third - 15%. In the production of the first plant, 20% of hours rush, the second - 30% and the third - 10% rush. Find the probability that the purchased watch is in a hurry.

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