My own take on this in an earlier post, was that it was either (this was half a joke) because he knows that there was NO work done on the car at all (there was nothing wrong with it, and it was just a pretext for meeting Arjun, without blowing his cover. DK never actually SAYS that there is anything wrong with the car, remember?), or to teach him the value of money.
Your explanation is better than either of mine. There is only one question that remains: how did DK get to know of the amount of the challenge? He might have traced Arjun's present whereabouts by having had a detective keep track of him, which is quite natural, for he would not let his only son wander off without knowing where he had gone. But that 'tec could hardly have been a fly on the wall when Archana was going thru her operatic rage with Arjun in the Karanjkar residence. How then did DK get to know that it was Rs.10000/-?
Shyamala B.Cowsik
Originally posted by: Ashlaika
Why did DK only give 50 ruppees as a tip?I think DK only tipped 50 rupees, cause he knows that Arjun WANTS to work for his money and would not accept any thing exorbitant from his father. If it was too much, Arjun may have not wanted to take it. After all, DK does know the amount of Arjun's challenge.
DK knows this, so he is being supportive.
Thats my view point 😊