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Vyflores2528
21.07.2019 •
Mathematics
Mary and jerry are exercising on a track -mary is walking at a rate of 3 miles per hour -jerry starts jogging at a rate of 4 miles per hour after mary has been walking for 15 minutes -jerry jogs 2 miles as mary continues walking and they both stop at the same time enter the total distance, in miles, that mary walks around the track
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Ответ:
With Mary's rate of walk, 3 miles per hour, we can just convert it to minutes and find the distance she has covered after 30 minutes.
3 miles/ 60 minutes, multiplying both numerator and denominator by 1/2, we will have 1.5 miles/30 minutes. Therefore, Mary has covered a distance of 1.5 miles around the track after the walk.
Ответ:
So your answer is c