The length of a rectangle is 3/2 units greater than it's width. if the width is w, which expression gives the perimeter of the rectangle in terms of its width? 4w+3

7/2w-3

5w

6w+4

P = 5w

Variables:

Perimeter:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.