Question
PSLE
Ivory and Japheth ran in a race. When Japheth had completed the race, Ivory had only run 35 of the distance. Japheth's speed was 80 m/min faster than Ivory's speed. Both of them did not change their speeds throughout the race. What was Ivory's speed in m/min?
3 m

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PSLE
Ivory and Japheth ran in a race. When Japheth had completed the race, Ivory had only run 35 of the distance. Japheth's speed was 80 m/min faster than Ivory's speed. Both of them did not change their speeds throughout the race. What was Ivory's speed in m/min?