The perimeter of a rectangle is 20. If the rectangle's length is less than 4, what is the range of possible values of its width?

Question

This is a word problem for my geometry class. 

Answer 1

P = 2l + 2w

20 = 2(4) + 2w

20 = 8 + 2w

12 = 2w

w = 6

 

20 = 2(0) + 2w

20 = 2w

w = 10

 

6 < w < 10