(ii) 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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Answer:
Distance =57336.0km−57321km=15km
Speed in km/min =15km/20min=
4
3
km/min
Speed in km/hr=
4
3
×
min
km
×
hr
60min
=(15×3)km/hr=45km/hr
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