Question
PSLE
Betty and Ian ran in a race. When Ian had completed the race, Betty had only run 57 of the distance. Ian's speed was 64 m/min faster than Betty's speed. Both of them did not change their speeds throughout the race. What was Betty's speed in m/min?
3 m

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PSLE
Betty and Ian ran in a race. When Ian had completed the race, Betty had only run 57 of the distance. Ian's speed was 64 m/min faster than Betty's speed. Both of them did not change their speeds throughout the race. What was Betty's speed in m/min?