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3. Nihar go to BBSR from BLS with speed 50 km/h in 5
hr & again go to Puri from BBSR with speed 30km/h in
5hr. then its average speed = _ _km/h.
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Explanation:
nihar from bbsr to Puri
speed is fifty km per in 5 hr
so distance=50*5=250
nihar from Puri to bbsr speed is 30km/hr in 5 hr so distance is 150km
total distance is 250+150=400km
total time 5+5 is 10
speed is distance /time
400/10is 40kmhr
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