Question
Excluding the Stoppages i.e. Non-stop, the speed of a
Bullet train is 810 km/h and including the stoppages, it is 720 km/h. Calculate for how many minutes does the bullet train stop per hour.Solution
Without stoppage, train can cover in 1 hr = 810km With stoppage, train can cover in 1 hr = 720km So in 1hr, trains stops for the time in which it can cover 90km (i.e.810 - 720) distance. So train stoped in 1 hr for = (810-720)/810 hrs = 90/810 hrs = 1/9 hr = 1/9 × 60 min = 20/3 min
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