PSLE
Julie and May started jogging from the same point of the 10 km track round a park. They started at the same time but in opposite directions. Julie jogged past May after 8 km. Both of them did not change their speeds throughout. Julie took 20 min to complete one round. What was May's jogging speed in m/min?
Distance that May jogged when they passed each other
= 10 - 8
= 2 km

Time that Julie took to jog 10 km = 20 min

Time that Julie took to jog 1 km
= 20 ÷ 10
= 2 min

Time that Julie took to jog 8 km
= 8 x 2
= 16 min

When Julie took 16 min to jog 8 km, May took the same time to jog 2 km.

1 km = 1000 m
2 km = 2000 m

May's jogging speed
= 2000 ÷ 16
= 125 m/min

Answer(s): 125 m/min