Question
PSLE
Opal and Erika started cycling at the same time along a 6 km track. Both did not change their speeds from start to finish. Opal cycled at 400 m/min. When she reached the end of the track, Erika was 1500 m behind her. What was Erika's cycling speed in m/min?
3 m

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PSLE
Opal and Erika started cycling at the same time along a 6 km track. Both did not change their speeds from start to finish. Opal cycled at 400 m/min. When she reached the end of the track, Erika was 1500 m behind her. What was Erika's cycling speed in m/min?