Comprehension Passage
Directions: Study the following information carefully and answer the questions given below.
Rohit embarks on a 93 km journey using three different vehicles: Tesla, Mercedes, and Ford. The average speed of his entire journey is 93 km/h. For the part of the journey covered by Mercedes and Ford, the average speed is 76.8 km/h. The ratio of the speed of the Tesla to the Mercedes is 8:5, while the speed of the Tesla is 50% more than the speed of the Ford. The difference between the speeds of the Mercedes and the Ford is 5 km/h.
If the speed of the Tesla is reduced by 'p' km/h and the speed of the Mercedes is increased by 'q' km/h such that the speeds of the Tesla and Mercedes become equal, the total time for the journey increases by 3.5 minutes.
The speed of a bicycle is '3p + 4q' km/h. What part of the total journey covered by Rohit is traveled by the bicycle in 30 minutes?
1
25/31
2
23/30
3
11/15
4
17/21
5
19/25