Content: teorver_3938.doc (27.50 KB)
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Loyalty discount! If the total amount of your purchases from the seller more than:

$3 the discount is 1%
$6 the discount is 2%
$9 the discount is 3%
$12 the discount is 4%
$15 the discount is 5%
$18 the discount is 6%
$20 the discount is 7%
$30 the discount is 10%
$0.32
3938. Watches are made in three factories and go to the store. The first plant produces 40% of incoming products, the second - 45%, the third - 15%. In the production of the first plant, 80% of hours rush, in the second - 70%, in the third - 90%. Watches bought in this store are in a hurry. What is the probability that they are produced at the first plant?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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