Question
PSLE
Brandon and Shiyun started jogging at the same time from point K to point M along the route shown. Brandon jogged 20 m/min faster than Shiyun. When Brandon reached point M, he turned around at once to jog towards point K. He met Shiyun at point L. They did not change their speeds throughout. What was Shiyun's jogging speed in m/min?
2 m

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PSLE
Brandon and Shiyun started jogging at the same time from point K to point M along the route shown. Brandon jogged 20 m/min faster than Shiyun. When Brandon reached point M, he turned around at once to jog towards point K. He met Shiyun at point L. They did not change their speeds throughout. What was Shiyun's jogging speed in m/min?