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

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