Rachin travels a distance at 60 km/hr for 2 hours
Rachin travels a distance at 60 km/hr for 2 hours and 80 km at 40 km/hr. Find the average speed of Rachin (in km/hr).
रचिन एक दूरी 2 घंटे तक 60 km/hr की चाल से और 80 km की दूरी 40 km/hr की चाल से तय करता है। रचिन की औसत चाल (km/hrमें) ज्ञात कीजिए।
Detailed Solution & Logic
Correct Answer:
50
$ 60 \times 2$ = 120 km
$ 80 \div 40 $ = 2 h
Total distance = 120 + 80 = 200 km
Total time = 2 + 2 = 4 h
Average speed= $ \dfrac{200}{4} $ = 50 km/h
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