Aaron A. answered • 05/30/18

Mathematics, Biology, Chemistry

Let x = miles traveled on day 1

Let y= miles traveled on day 2

x is twice that of y:

x=2y

Total distance traveled is the distance traveled on day 1 plus the distance traveled on day 2:

x+y =960

Substitute 2y (from first equation) for x in the second equation and solve for y:

2y + y =960

3y=960

y=320 mi

Substitute this value of y into either of the two equations and solve for x:

x=2y

x=2(320)

x=640mi

They travel 640 miles on day one, and 320 miles on day 2.