P28_001.PDF

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Chapter 28 - 28.1
1. (a) The cost is (100W
·
8 . 0h / 2 . 0W
·
h)($0 . 80) = $320 .
(b) The cost is (100W
·
8 . 0h / 10 3 W
·
h)($0 . 06) = $0 . 048 = 4 . 8 cents .
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