41) A train running at a speed of 50 km/hr takes 16 hrs to complete a journey. It stops for 1 hour on different stations during the journey. For howmany hours the speed of the train be increased so that it complete the same journey in 10 hrs ? (Sainik School, 2011-12)
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Step-by-step explanation:
Travelling at 60 km/h the distance covered in 8 hours is 480 km.
Now if 480 km are to be covered in 6 hours, the speed of the train has to be 480/6 = 80 km/hr.
So the train has to travel 20 km/hr faster or 33.33% faster than the previous speed.
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