Question
PSLE
Erika and Risa started cycling at the same time along a 3.6 km track. Both did not change their speeds from start to finish. Erika cycled at 300 m/min. When she reached the end of the track, Risa was 600 m behind her. What was Risa's cycling speed in m/min?
3 m

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PSLE
Erika and Risa started cycling at the same time along a 3.6 km track. Both did not change their speeds from start to finish. Erika cycled at 300 m/min. When she reached the end of the track, Risa was 600 m behind her. What was Risa's cycling speed in m/min?