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A train leaves Delhi on 29th August, 2019 at 16 : 30 hours and reaches its destination on 31st August at 08 : 45 hours. The total travel time of the journey is

  • A.36 hours 15 minutes
  • B.38 hours 45 minutes
  • C.39 hours 45 minutes
  • D.40 hours 15 minutes

Answer: D

The travel time is 40 hours 15 minutes.

Count in steps from 16:30 on 29 August:

\[ \begin{aligned} \text{to 16:30 on 31 Aug} &= 48\ \text{h} \\ \text{08:45 is } 7\ \text{h}\ 45\ \text{min earlier} &\Rightarrow 40\ \text{h}\ 15\ \text{min} \end{aligned} \]

Equivalently, 7 h 30 min to midnight on 29 August, 24 h on 30 August, and 8 h 45 min on 31 August make 40 h 15 min. The other options come from miscounting a day or the minutes.

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