w(w+3)*16 = 364
now just solve for w.
A rectangular room is 3m longer than it is wide.
It costs 364 pounds to carpet the room. Carpet costs 16 pounds per square metre.
How wide is the room?
2 answers
Area = 364/16 = 22.75 m^2
Width = W meters.
Length = W+3 meters.
Area = (W+3) * W = 22.75
W^2 + 3W - 22.75 = 0
Use Quadratic Formula:
W = 3.5 meters = Width.
Width = W meters.
Length = W+3 meters.
Area = (W+3) * W = 22.75
W^2 + 3W - 22.75 = 0
Use Quadratic Formula:
W = 3.5 meters = Width.
2 answers