math
posted by jenny .
a cleaner charges $0.50 per square foot to polish wood floors. a school hall has a floor area of 30 feet by 50 feet. what would be the total cost to polish the floor of the school hall?
A. $80
B. $375
C $750
D $1,500
I think it is C.

What don't you understand about the answer I posted for you last night?
http://www.jiskha.com/display.cgi?id=1364347306
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