A train normally covers a certain distan...

A train normally covers a certain distance at a speed of 60 km/hr. However, if it were to halt for a fixed time interval in each hour its average speed reduced to 50km/hr. what is the time interval for which the train halt in each hour?

10 minutes

20 minutes

6 minutes

12 minutes

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A train normally coveres a certain distance at a speed of 60 km/hr. However, if it were to halt for a fixed time interval in each hour its average speed reduced to 50 km/hr. What is the time interval for which the train halt in each hour ?

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