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 Class 8 Mathematics revision: Speed, time and distance questions and answers

A car travelled 216km at an average speed of 48km/h. On the return journey the average speed increased to 72km/h. Calculate the average speed, in km/h for the whole journey?
A. 57.6
B. 60
C. 28.8
D. 68.6

 (5m 34s)
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