A cyclist leaves home and rides due east for a distance of 45 km she returns home on the same bike path if the entire trip takes 4h what is her average speed?

To find the average speed of the cyclist, we first determine the total distance traveled. The cyclist rides 45 km east and then returns 45 km home, making the total distance 90 km. The total time for the trip is 4 hours. Thus, the average speed is calculated as total distance divided by total time: 90 km / 4 h = 22.5 km/h.