The odometer of a car reads 57321.0 km when the clock shows the time 08:30 AM and at 10:30 AM, the odometer reading has changed to 57421.0 km? Express the speed in km/h
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Answers
Question:
The odometer of a car reads 57321.0km when the clock shows the time 08:30AM. What is the distance moved by the car, if at 08:50 AM, the odometer reading has changed to 57336.0km ? Calculate the speed of the car in km/min during this time. Express the speed in km/h also.
Solution:
The initial reading of the odometer of the car =57321.0 km
The final reading of the odometer of the car = 57336.0 km
The car starts at 8:30 AM and stops at 8:50 AM.
Distance covered by car = (57336 - 57321) km = 15 km
Time taken between 08:30 AM to 08:50 AM = 20 minutes = 20/60 hour = 1/3 hour
So Speed in km/min
Speed = (Distance travelled)/(Time)
= (15km)/(20min)
= 0.75km/min
Speed in km/h Speed = (Distance travelled)/(Time)
= (15km)/(1/3h)
= (15 x 3) km/(1h)
= 45km/h