Directions: Answer the question based on the information given below:

Three persons P, Q, and R started their journey at 9: 30 a.m, 11: 00 a.m., and 2:00 p.m. respectively. The speed of Q is 5² m/sec. Q reached the destination on the same day at 7: 30 p.m. Q is the fastest person and R is not the slowest person.

The speed of P is 15% less than the speed of Q, then at what, time P will reach his destination? 

I. After 6 hours with respect to Q 

II. At 7: 30 p.m.

III. After 7 hours with respect to R