Question
PSLE
Roshel and Justin ran in a race. When Justin had completed the race, Roshel had only run 710 of the distance. Roshel's speed was 81 m/min slower than Justin's speed. Both of them did not change their speeds throughout the race. What was Justin's speed in m/min?
3 m

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PSLE
Roshel and Justin ran in a race. When Justin had completed the race, Roshel had only run 710 of the distance. Roshel's speed was 81 m/min slower than Justin's speed. Both of them did not change their speeds throughout the race. What was Justin's speed in m/min?