Q.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.

Initial reading of the odometer = 57321.0

Final reading of the odometer = 57336.0

Distance covered by the car = Final reading of the odometer - Initial reading of the odometer = 57336.0 km – 57321 km =15 km

Speed =\(\frac{15km}{20 min} =\frac{3}{4} km/min \)

Speed in km/hr =\(\frac{3}{4} \) × 60 =(15 x 3) km/hr =45 km/hr.