Question
PSLE
Nora and Mary started cycling at the same time along a 8.4 km track. Both did not change their speeds from start to finish. Nora cycled at 400 m/min. When she reached the end of the track, she was 525 m ahead of Mary. What was Mary's cycling speed in m/min?
3 m

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PSLE
Nora and Mary started cycling at the same time along a 8.4 km track. Both did not change their speeds from start to finish. Nora cycled at 400 m/min. When she reached the end of the track, she was 525 m ahead of Mary. What was Mary's cycling speed in m/min?