Question

A car travels 120 km at a speed of 40 km/h and then 180 km at a speed of 60 km/h. Find the total time taken and the average speed for the whole journey.

A 6 hrs and 50 km/h
B 5 hrs and 50 km/h
C 9 hrs and 80 km/h
D 2 hrs and 30 km/h
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