Question
PSLE
Jem and Sonia 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. Jem jogged past Sonia after 10 km. Both of them did not change their speeds throughout. Jem took 15 min to complete one round. What was Sonia's jogging speed in m/min?
3 m

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PSLE
Jem and Sonia 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. Jem jogged past Sonia after 10 km. Both of them did not change their speeds throughout. Jem took 15 min to complete one round. What was Sonia's jogging speed in m/min?