Question

The length of a rectangle is 2 units shorter than one-fifth of the width, x.

Which expression represents the perimeter of the rectangle?




​ 2/5x−8 ​

12/5x−4

2/5x−4

12/5x−2

Answer 1

I just took the test and the answer is B. 12/5x - 4

In case anyone else has the same question

Answer 2

y = 1/5x - 2

Perimeter = 2(x + y)

P = 2(x + 1/5x - 2)
P = 12/5x - 4