Posted by **tttt** on Wednesday, April 2, 2014 at 8:36pm.

a farmer wishes to fence off a rectangular plot of land, using an existing wall as one of the sides . the total are enclosed must be 600 square yards. the fence on the side parallel to the wall will cost 20$ per yard, while the fences on the other side will cost 30$ per yard.

What should the dimension of the rectangle be in order to minimize the total cost of the fence?

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