EM-1127
Rate and average speed
E Math · Secondary 3 · Medium · Rate and average speed
Ray ran a 12 km race. He ran the first 3 km at a constant speed of 8 km/h and the remaining distance at a constant speed of 10 km/h.
What was his average speed for the whole race?
What was his average speed for the whole race?
- 9.4 km/h
- 9.0 km/h
- 10.0 km/h
- 8.7 km/h
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