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

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