A rectangular garden is bounded on one side by a house and is to be fenced on the other three sides. Fencing material costs $16 per foot for the side parallel to the house and $20 per foot for the other two sides. What are the dimensions of the garden of the largest possible area if $1600 is to be spent for fencing material?

Question

A rectangular garden is bounded on one side by a house and is to be fenced on the other three sides. Fencing material costs $16 per foot for the side parallel to the house and $20 per foot for the other  two sides. What are the dimensions of the garden of the largest possible area if $1600 is to be spent for fencing material?

anonymous · Answer

A=xy/320 and
2x+y = 1600
Is that right?