Answer:
Step-by-step explanation:
x represents the distance from original location to the first city
y the distance from first to second city
x+y =200 and x=y-40
Let us write this in standard form
x+y =200 ... i
x-y =40 ... ii
We can solve this by elimination
Adding i and ii
we get
2x =240 or x =120
Substitute this in i
y = 200-120 =80
Hence solution is
(120,80)
The answer choice is given reverse as (80,120)