A car bus piles between two towns P and R via town Q daily. one each day it departs from P at 8.15 a.m. and stop for 40 minutes at Q before proceeding to R. On a certain day, the car took 5 hours 40 minutes to travel from P to Q and 3 hours 15 minutes to travel from Q to R. Find, in 24 hour clock system, the time the car arrived at R.

total time = 5 2/3 +2/3 + 3 1/4

= 9 7/12 hours
= 9 hours and 35 minutes

now add that to 8:15