Posted by Anonymous on Wednesday, July 29, 2009 at 10:28pm.
40 * 6.40 = 256
48.5 - 40 = 8.5
8.5 * 9.60 = 81.60
256 + 81.60 = $337.60
To my mind easier to understand if the units are included? [I am very pedantic about including units my students!]
40 h * $6.40 h^-1 = $256
48.5 h - 40 h= 8.5 h
8.5 h * $9.60 h^-1= $81.60
$256 + $81.60 = $337.60
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