Laura plans to paint the 8-ft high rectangular walls of her room and before she buys paint she needs to know that area of the wall surface to be painted. Two walls are 10 ft wide and the other two walls are 15 ft wide. The combined area of the one window and the one door in her room is 60 square feet. What is the area, in square feet, of the wall surface Laura plans to paint? A.200
B.340
C.360
D.390
E.400