Johan set off on a 270-km journey at 09 00. He drove at a speed of 80 km/h for the first 1 1/2 hours. For the rest of the journey, he drove at a speed of 60 km/h. At what time did he complete the journey?
Jack travelled 1/3 of his journey at a speed of 60 km/h and completed the remaining 240 km in 3 hours.
a) Find the total distance travelled.
b) Find his average speed for the whole journey.
a) Find the total distance travelled.
b) Find his average speed for the whole journey.
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