Content: teorver_3962.doc (24.00 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
3962. The store received electric lamps produced by two plants. Among them, 80% are manufactured by the first plant, and the rest - by the second. It is known that 10% of the lamps of the 1st plant and 20% of the lamps of the 2nd plant contain a hidden defect. The probability of purchasing a lamp without a defect in this store is equal to
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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