Question
PSLE
Opal and Vina started jogging from the same point of the 15 km track round a lake. They started at the same time but in opposite directions. Opal jogged past Vina after 12 km. Both of them did not change their speeds throughout. Opal took 30 min to complete one round. What was Vina's jogging speed in m/min?
3 m

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PSLE
Opal and Vina started jogging from the same point of the 15 km track round a lake. They started at the same time but in opposite directions. Opal jogged past Vina after 12 km. Both of them did not change their speeds throughout. Opal took 30 min to complete one round. What was Vina's jogging speed in m/min?