Question
PSLE
Diana and Carl ran in a race. When Carl had completed the race, Diana had only run 710 of the distance. Carl's speed was 75 m/min faster than Diana's speed. Both of them did not change their speeds throughout the race. What was Diana's speed in m/min?
3 m

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PSLE
Diana and Carl ran in a race. When Carl had completed the race, Diana had only run 710 of the distance. Carl's speed was 75 m/min faster than Diana's speed. Both of them did not change their speeds throughout the race. What was Diana's speed in m/min?