The respective ratio between the speed of a speed of the car, bus and train is 5 : 9 : 6. The average speed of the car, bus and train is 72 km/hr together. What is the average speed (km/h)of the car and the train together?

The respective ratio between the speed of a speed of the car, bus and train is 5 : 9 : 6. The average speed of the car, bus and train is 72 km/hr together. What is the average speed (km/h)of the car and the train together? সঠিক উত্তর 84

ধরি, গাড়ি,ট্রেন,এবং বাসের গতিবেগের অনুপাত 5x,9x এবং 4x kmph
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