Question
PSLE
Flynn and Usha started jogging at the same time from point D to point F along the route shown. Flynn jogged 50 m/min faster than Usha. When Flynn reached point F, he turned around at once to jog towards point D. He met Usha at point E. They did not change their speeds throughout. What was Usha's jogging speed in m/min?
2 m

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PSLE
Flynn and Usha started jogging at the same time from point D to point F along the route shown. Flynn jogged 50 m/min faster than Usha. When Flynn reached point F, he turned around at once to jog towards point D. He met Usha at point E. They did not change their speeds throughout. What was Usha's jogging speed in m/min?