<PRE><B>Question 1194742</B>
Suppose a driver with car leaves home at 8AM and first travels 30 km/hr for two hours, then stops one hour for coffee.
 He then travels at 80 km/hr for the next five hours, to arrive at the destination.
 (we imagine a magical car that does not need to accelerate or decelerate)
:
1. How many hours was this trip, from start to finish?
2 + 1 + 5 = 8 hrs
2. At what time did the driver arrive at the destination?
8 Am + 8 = 16 which is 4 pm
3. How many km did the driver cover?
(30*2) + (80*5) = 460 km
4. what was the average rate of speed (including the rest time!), in km/hr for the entire trip?
{{{460/8 = 57.5}}} km/hr</PRE>