600 feet of fence are to be used to fence a rectangular garden, and also to make an internal divider parallel to one side of the garden. What is the largest area that this garden can have

15000 square feet.

Step-by-step explanation:

From the statement we have that it would be 2 times the length and 3 times the width due to the divisor, therefore, the perimeter would be equal to:

600 = 2 * l + 3 * w

300 = l + 3/2 * w

we solve for w:

l = 300 - 3/2 * w

in addition the area is equal to:

A = w * l

replacing:

A = w * (300 - 3/2 * w)

A = 300 * w - 3/2 * w ^ 2

We derive:

A '= 300 - 6/2 * w

A '= 300 - 3 * w

we equal 0:

300 - 3 * w = 0

w = 300/3

w = 100

replacing and we calculate l:

l = 300 - 3/2 * 100

l = 150

A = 100 * 150

A = 15000 ft ^ 2

The largest area would be 15000 square feet.

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