If a train cover a half of distance at speed 60 km/h and other half at 30 km/h calculate the average speed of train
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ყσυɾ αɳʂɯҽɾ ɾҽϝҽɾʂ ƚσ ƚԋҽ αƚƚαƈԋɱҽɳƚ.
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mark me as brainest
Explanation:
answer is 40km/h hope it helped
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