Question
PSLE
Luis and Tina started jogging at the same time from point L to point N along the route shown. Luis jogged 40 m/min faster than Tina. When Luis reached point N, he turned around at once to jog towards point L. He met Tina at point M. They did not change their speeds throughout. What was Tina's jogging speed in m/min?
2 m

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PSLE
Luis and Tina started jogging at the same time from point L to point N along the route shown. Luis jogged 40 m/min faster than Tina. When Luis reached point N, he turned around at once to jog towards point L. He met Tina at point M. They did not change their speeds throughout. What was Tina's jogging speed in m/min?