Answer:
Step-by-step explanation:
[55X+43,810-65X]/3,575=11.14
55X-65X+43,810=11.14*3,575
-10X=39,825.5-43,810
-10X=-3,984.5
X=-3,984.5/-10
X=398.45 MILES IS THE DISTANCE DRIVEN 65 MPH.
674-398.45=275.5 FOR THE 55 MPH DRIVE.
PROOF:
398.45/65+275.5/55=11.14
6.13+5.01=11.14
11.14=11.14