Ok so im doing a literal equations project but my teacher didnt put anything for l and n i need two equations for l and one for n can someone plz me before 9: 00!

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30