Question
PSLE
Opal and Irene started cycling at the same time along a 4.5 km track. Both did not change their speeds from start to finish. Opal cycled at 300 m/min. When she reached the end of the track, Irene was 1875 m behind her. What was Irene's cycling speed in m/min?
3 m

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PSLE
Opal and Irene started cycling at the same time along a 4.5 km track. Both did not change their speeds from start to finish. Opal cycled at 300 m/min. When she reached the end of the track, Irene was 1875 m behind her. What was Irene's cycling speed in m/min?