a car moves at a speed of 60 km/hr for 50 km and 80 km/hr for the next 50 km/hr . what is average speed ( in km / hr ) of car for the journey of 100 km ?
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Answer:
60(6/7) km/h
Explanation:
Speed of car for 50km: 60 km/h
Time taken: D/S
→50/60
→5/6 hours
→50 minutes
Speed of car for next 50 km: 80km/h
Time Taken: D/S
→50/80
→5/8 hours
→37.5 minutes
Total time taken: 5/6 + 5/8
→35/24
Total distance covered: 50 + 50
→100 km
Average Speed of the car: D/T
→ 100/(35/24)
→ 60(6/7) km/h
Hence, the Average Speed of the car is 60(6/7) km/h.
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