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A courier service has offices at three locations: Jamshedpur, Kharagpur and Howrah. Its employees travel by trains from one location to another for pick-up and delivery. It takes 40 minutes for an employee to travel from any railway station to the nearest office (and another 40 minutes for coming back); the paperwork to deliver the parcel at the respective office takes an additional 10 minutes. Assume employees do not waste any time.
An employee, starting from Kharagpur station, has to deliver one parcel at Howrah office and another parcel at Jamshedpur office. His task starts the moment he boards the train at Kharagpur station, and gets completed immediately after delivering the second parcel.
Which of the following trains should he board at Kharagpur station to minimize the time required to complete the task?
In options (C) and (D), the employee has to go from Kharagpur to Jamsedpur. After reaching Jansedpur, he again has to go to Howrah via Kharagpur, which will take longer. Hence, these two options can be eliminated, and
Therefore, option (E) can also be eliminated.
The time required for the employee on the trains T102 and T103 is as follows:
(A) T102- 9 hours 30 minutes
(B) T103- 8 hours 45 minutes
Therefore, the minimum time required will be on train no T103.
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