A rectangular garden has a perimeter of 172 feet. The length of the garden is 24 feet more than the width. What are the dimensions of the garden? (Recall the formula P = 2L + 2W.)

From 172 = 2L + 2W, divide by 2 to get L + W = 86. Since L = W + 24, substitute to get 2W + 24 = 86, so W = 31 and L = 55. The garden measures 31 ft by 55 ft, which is choice B.

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