Car fare!!

I take a private car from my house to my office located at the outskirts of the city in the morning and back home in the evening. It costs me 300 rupees everyday. One day the taxi driver informed me that there are two students who wish to go to their college every day in the morning along with me! Their get-in point is exactly halfway between my house and office. Their college is adjacent to my office. On the first day I told them, "If you tell me the mathematically correct price that each one of you should pay for your portion of the trip, I
will let you travel free along with me." How much should the individual student pay for his journey?

 Answer:
The individual student should pay 50 rupees for his journey. Here is the calculation. Divide the entire journey in to four parts: My house to middle point, and from there to my office (their college) and vice versa while coming. The students catch me up at the middle point and travel along with me till destination. I travel four parts. They are two people making it total six parts. Each part costs 1/6th which works out to Rupees 50/-.

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