Problema Solution
Carpet sells for $5 per square foot and will cost you $990 to recarpet your room. If your room is 18 feet long, how many feet wide is it?
Answer provided by our tutors
let
w = the width of the carpet
the area of the carpet A = 18w square feet
the cost of 18w square feet is:
5*18w = 990
by solving we find
w = 11 ft
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the room is 11 feet wide.