Question
PSLE
Ella and Riley started jogging from the same point of the 12 km track round a park. They started at the same time but in opposite directions. Ella jogged past Riley after 10 km. Both of them did not change their speeds throughout. Ella took 15 min to complete one round. What was Riley's jogging speed in m/min?
3 m

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PSLE
Ella and Riley started jogging from the same point of the 12 km track round a park. They started at the same time but in opposite directions. Ella jogged past Riley after 10 km. Both of them did not change their speeds throughout. Ella took 15 min to complete one round. What was Riley's jogging speed in m/min?