An express traveled at an 2 speed of 100 km/hr, stopping for 4 min after every 75 km. How long did it take to reach its destination 600 km from the starting point ?
A) 6 hrs 24 min
B) 6 hrs
C) 7 hrs 21 min
D) 6 hrs 28 min
Answers
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Sol: Distance = 600 km Speed = 100 km/hr Time taken = Distance / Speed = 600 / 100 = 6 Hr Number of stops for 600 km = (600 / 75) - 1 = 7 Time of stopping after every 75 km = 3 min Total time of stoppings = 3 x 7 = 21 min Time taken to reach the destination = 6 hrs 21 min.
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Option d is the correct answer
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