Question
PSLE
Zoe and Riley started jogging from the same point of the 10 km track round a park. They started at the same time but in opposite directions. Zoe jogged past Riley after 4 km. Both of them did not change their speeds throughout. Zoe took 40 min to complete one round. What was Riley's jogging speed in m/min?
3 m

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PSLE
Zoe and Riley started jogging from the same point of the 10 km track round a park. They started at the same time but in opposite directions. Zoe jogged past Riley after 4 km. Both of them did not change their speeds throughout. Zoe took 40 min to complete one round. What was Riley's jogging speed in m/min?