On a 120km track a train travel the first 30km/he at a uniform speed.how fast the train travel the next 90 km so as to avarage 60km/hr for the entire trip
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Speed of the train in the first 30 km, v1 = 30 km/h
Speed of the train in the next 90 km, v2 (to be determined)
Average speed = 60 km/h = (v1 + v2)/2
= (30 km/h + v2)/2
⇒ v2 = 90 km/h
Hope This Helps :)
Speed of the train in the next 90 km, v2 (to be determined)
Average speed = 60 km/h = (v1 + v2)/2
= (30 km/h + v2)/2
⇒ v2 = 90 km/h
Hope This Helps :)
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