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There were three parts to Rita’s race. She ran the first part, which was 4/9 of that total distance, in 20 minutes. She ran the second part, which was 2/5 of the remaining distance, in 12 minutes. She finally ran the third part in 15 minutes at a speed of 200 meter per minute. How long was the second part of the race? What was Rita’s speed in that section of the race?
Sagot :
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