Question 878872
Elsa drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 8 hours. When she drove home, there was no traffic and the trip took 6 hours. If her average rate was 16 mph faster on the trip home, how far away does Elsa live from the mountains?
***
let x=rate of speed on the way to the mountain
x+16=rate of speed on the way home
distance=travel time*rate of speed
..
8x=6(x+16)
8x=6x+96
2x=96
x=48
distance=8*48=384
 how far away does Elsa live from the mountains? 384 miles