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

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