The respective ratio between the speed of a car, a train, and a bus is 5:9:4. The average speed of the car, bus and train is 72 km / hr together. what is the average speed of the car and the train together? | Prostuti
1. The respective ratio between the speed of a car, a train, and a bus is 5:9:4. The average speed of the car, bus and train is 72 km / hr together. what is the average speed of the car and the train together?
