The NYC Parks Department is designing a rectangular athletic field for a new park in Brooklyn. The width of the field needs to be 10 feet shorter than the length, and the perimeter of the field needs to be 80 feet. What is the length of the new field?

Question

Maestro

Mathematics

21 April, 13:49

The NYC Parks Department is designing a rectangular athletic field for a new park in Brooklyn. The width of the field needs to be 10 feet shorter than the length, and the perimeter of the field needs to be 80 feet. What is the length of the new field?

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Answers (1)

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Ahmad Ortega · Answer 1

Length = 25feets

Step-by-step explanation:

Let the length l = x

Width w = x - 10

Perimeter = 80

And Perimeter = 2 (l + w)

: - 80 = 2{x + (x - 10) }

80 = 2{x + x - 10}

80 = 2 (2x - 10)

80 = 4x - 20

4x = 80 + 20

4x = 100

x = 100/4

x = 25ft