physics
posted by Shannon on .
A person takes a trip, driving with a constant speed 94 km/h except for a 83 min rest stop. If the person's average speed is 70 km/h, how far is the trip? Answer in units of km

howfar=70km/hr*(time driving+83/60)
howfar=94km/hr*timedriving
set them equal, solve for time driving, then, using that , go back to either equation and solve for distance.