Question

# Goa Express, bound for Goa, starts from Delhi at 10:00 hours and reaches Goa at 21:30 hours in the next evening. What is the total time taken by the train?

Hint: In railway time, a day starts with 00:00 and completes at 23:59. The first two digits are hours and the next two digits are minutes. Use this fact to find the total time taken by the train.