EM-1169
Rate and average speed
E Math · Secondary 3 · Medium · Rate and average speed
A bus travels from Town A to Town B, 75 km apart, at 60 km/h. It immediately returns from B to A at 90 km/h. Find the average speed of the bus for the whole journey.
- 72 km/h
- 75 km/h
- 80 km/h
- 90 km/h
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