please explain how to do this.
rate * time = distance (and the distance each way is equal)
50 m/hr * x = 70 m/hr ( 24/5 -x) 24/5 is 4 4/5 x is amount of time at 50m/hr
50x = 336-70x
120x = 336
x = 2.8 hrs at 50 m/r 50 m/hr * 2.8 hr = 140 miles
please explain how to do this.
