Question
PSLE
Betty and Fred ran in a race. When Fred had completed the race, Betty had only run 57 of the distance. Betty's speed was 84 m/min slower than Fred's speed. Both of them did not change their speeds throughout the race. What was Fred's speed in m/min?
3 m

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PSLE
Betty and Fred ran in a race. When Fred had completed the race, Betty had only run 57 of the distance. Betty's speed was 84 m/min slower than Fred's speed. Both of them did not change their speeds throughout the race. What was Fred's speed in m/min?