A train of 300 m is travelling with the speed of 45 km/h when it passes point a completely. At the same time, a motorbike starts from point a with the speed of 70 km/h. When it exactly reaches the middle point of the train, the train increases its speed to 60 km/h and motorbike reduces its speed to 65 km/h. How much distance will the motorbike travel while passing the train completely?
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Answer:2.37km
Step-by-step explanation:
Time taken by bike = 150/((70-45)×1000) + 150/((65-60)×1000) 70-45 and 65-60 are the relative speed of bike as train and bike are moving in the same direction and 1000 to convert m to km time = 6/(7×25) avg speed of bike will be 2×65×70/(65+70) then distance covered by bike will be 2×65×70/(65+70) × 6/(7×25) = 2.311 which close to 2.37
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