Mohan, Namit and Pranav travel from Agra to Delhi. They have a two seater bike which can be driven by only Mohan. It is known that due to very stringent traffic rules only two persons can ride at a time. Delhi is 180km from Agra. All of them can walk at 6 kmph, but reach to Delhi simultaneously also they started their journey simultaneously.
And the questions are,
Q1) If the speed of the bike is 36 kmph, then what is the total distance that the bike travels.?
Q2) If the speed of the bike is 42kmph, then what is the shortest possible time in which all three of them can complete the journey?
If I consider that Mohan travels with Pranav for some distance and leaves him there and returns to pick up Namit and meanwhile Pranav starts walking towards the destination like that, I couldn't understand how to solve it further.
Though I tried my best to solve this based on my assumption, I couldn't get the required answer.
Could any one please help me with this problem.