5. The odometer of a car reads 57321.0 km when the clock shows the time 08:30 AM. What is the distance moved by the car, if at 08:50 AM, the odometer reading has changed to 57336.0 km? Calculate the speed of the car in km/min during this time. Express the speed in km/h also.
We have,
Initial reading of odometer = 57321 km
Final reading of odometer = 57336 km
So, distance covered by the Car = Final reading - Initial reading = 15 km
The total time taken by the car to travel 15 km = 8:50 AM - 8:30 AM = 20 min
According to question,
Speed of the car = Distance / time taken = 15/20 = 0.75 km/min
Again, 60 minute = 1 hr
so, 1 min = 1/60 hr
Speed in terms of km/hr =