Question
PSLE
Erika and Pierre ran in a race. When Pierre had completed the race, Erika had only run 57 of the distance. Pierre's speed was 60 m/min faster than Erika's speed. Both of them did not change their speeds throughout the race. What was Erika's speed in m/min?
3 m

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PSLE
Erika and Pierre ran in a race. When Pierre had completed the race, Erika had only run 57 of the distance. Pierre's speed was 60 m/min faster than Erika's speed. Both of them did not change their speeds throughout the race. What was Erika's speed in m/min?