Question 769357
a bus leaves bloem at 19:25 and reaches durban at 02:50, a distance of approximately 540km 

Q1 how many minutes does the bus take to its journey
07:25 = 445 minutes
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Q2 how many seconds does it take to travel 1 kilometer
540 km/445 min * 60 sec/min =~ 72.81 seconds 
Q3 the average speed of the bus
540/445 = 180/89 km/min
=~ 2.022 km/minute