2007 AMC 12B Problems/Problem 1

1. Isabella's house has 3 bedrooms. Each bedroom is 12 feet long, 10 feet wide, and 8 feet high. Isabella must paint the walls of all the bedrooms. Doorways and wondows, which will not be painted, occupy 60 square feet in each bedroom. How many square feet of walls must be painted?

A. 678 B. 768 C. 786 D. 867 E. 876

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