Question
PSLE
Ken and Tiffany started jogging at the same time from point H to point K along the route shown. Ken jogged 30 m/min faster than Tiffany. When Ken reached point K, he turned around at once to jog towards point H. He met Tiffany at point J. They did not change their speeds throughout. What was Tiffany's jogging speed in m/min?
2 m

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PSLE
Ken and Tiffany started jogging at the same time from point H to point K along the route shown. Ken jogged 30 m/min faster than Tiffany. When Ken reached point K, he turned around at once to jog towards point H. He met Tiffany at point J. They did not change their speeds throughout. What was Tiffany's jogging speed in m/min?