Solution of problem N3782 probability theory total prob

Solution of problem N3782 probability theory total prob

3782. The warehouse received products from two workshops: 60% from the first and 40% from the second. Among the products of the first workshop, the marriage is 0.05%, the second 0.2%. Find the probability that the product taken from the warehouse will be suitable.

Additional information:

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