



 
Svitlana, The key to this problem is a careful reading of the room's length is seven feet more than twothirds of its width. If the length is L feet and the width is W feet then you know that L is seven feet more than 2/3 W. That is
The area of the room is 180 square feet so
Substitute L = 2/3 W + 7 into the expression for the area to find an equation for W. Solve for L and W and this will then allow you to calculate the cost. Penny  


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