These questions are based on the following information.
Ram, Shyam and Tarun started travelling from city P to city Q at same time. Tarun took Ram on his moped while Shyam started on foot. Tarun dropped Ram on the way and asked him to walk the remaining distance to Q. He drove back till he met Shyam. He picked him up and drove to Q. All the three reached Q simultaneously. Both Ram and Shyam walk at 6 kmph while Taruns moped travels at 30 kmph. PQ = 168 km.
Find the time (in hours) taken by each person to travel from P to Q.