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

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