If a car travels at an average speed 25meter/second, then the average speed in Km/h is _____

Distance Covered in 1 Second=25 Meters
One Minute=60 Seconds
One Hour=60*60=3600 seconds
Distance Covered in One Hour=25*3600=9000 Meters
1000 Meters=1 Km
90000 Meters=90000/1000=90Km