when their is a decrease of 10km/hr in the usual uniform speed of a goods train, due to track repair work going on, is its takes 4 hours more than the usual time for travelling the distance of 1200 km . find the usual speed of the goods train
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when their is a decrease of 10km/hr in the usual uniform speed of a goods train, due to track repair work going on, is its takes 4 hours more than the usual time for travelling the distance of 1200 km . find the usual speed of the goods train
saiyam4:
what is answer?
i know the answer
but i doesn't know the solution
but i doesn't know the answer
answer is 60 km/hr
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