a car moves with a speed of 30 kilometre per hour for half an hour 25 km per hour for 1 hours and 40 kilometres per hour for 2 hours calculate the average speed of the car
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Distance = Speed*Time
1st Case = 30*1/2 = 15km
2nd Case = 25*1 = 25km
3rd case = 40*2 = 80km
Total Distance Travelled = 15+25+80 = 120km
Total Time = 1/2+1+2 = 7/2
Average Speed = 120/ 7/2 = 120*2/7 = 240/7 km/h
Or 34.28 km/h
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1st Case = 30*1/2 = 15km
2nd Case = 25*1 = 25km
3rd case = 40*2 = 80km
Total Distance Travelled = 15+25+80 = 120km
Total Time = 1/2+1+2 = 7/2
Average Speed = 120/ 7/2 = 120*2/7 = 240/7 km/h
Or 34.28 km/h
Hope you ll like it
pls follow me........
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