Ruth is having hardwood floors installed in her living room. the cost for the material is $2840 plus an installation charge of $1.90 per square foot. if the total cost for the material plus installation is $5120, determine the area of her living room.
total cost (T.C.) = 5120
cost for material (M.C.) = 2840
installation charge (I.C.) = 1.90/sq. ft.
T.C. = M.C. + I.C. * Area of living room (A)
or, 5120 = 2840 + 1.90 * A
or, A = (5120 - 2840) / 1.90
Area of living room = 1200 sq. ft.
