math
posted by Anonymous .
Claudia earns $6.40 per hour (h). For overtime (each hour
over 40 h) she earns $9.60. If she works 48.5 h in a week, what pay should she
receive?

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