MA-636
Rate and speed problems
Lower Sec Maths · Secondary 1 · Hard · Rate and speed problems
A cyclist rides at 12 km/h for 1.5 hours and then at 18 km/h for 30 minutes. What is his average speed for the whole journey in km/h?
- 12 km/h
- 13.5 km/h
- 15 km/h
- 18 km/h
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