Raina drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 6 hours. When Raina drove home, there was no traffic and the trip only took 4 hours. If her average rate was 22 miles per hour faster on the trip home, how far away does Raina live from the mountains
+36916 ALL of these questions require that you know RATE * TIME = DISTANCE
Distance is the same for both ways on her trip d
rateu =x
rated = x+22
x * 6 = d on the way up to the mts and (x+22) * 4 =d on the way back (they are equal d)
x*6 = (x+22)*4 solve for x her rate going up....then
distance = rate * time = x * 6
