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

Click button first when a symbol is required. X

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