The odometer of the car reads 57321 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 km? calculate the speed of the car in km/min during this time. express the speed in km/h also.
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Explanation:
57321 km - 8:30 am
57336 km - 8: 50 am
speed - km/ min and km/ hr
time = 20 mins
= 20 ÷ 60 hrs
distance = 57321 - 57336 km
= 15 km
speed = Distance ÷ time
= 15 ÷ 20 km / min
= 3/4 = 0.75 km/ min
speed = 15/20/60
= 15 ÷ 20 × 60
= 45 km / hr
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