Gretchen and henrik are meeting at a park. gretchen lives 2.4 miles away from the park and bikes at a constant rate of 12 miles per hour. henrik lives 8.4 miles away from the park and he drives at a constant rate of 36 miles. per hour. if they both head out at the same time, who will arrive first and by how many minutes?

Question

Mathematics

Jillian Petty

19 August, 12:46

Gretchen and henrik are meeting at a park. gretchen lives 2.4 miles away from the park and bikes at a constant rate of 12 miles per hour. henrik lives 8.4 miles away from the park and he drives at a constant rate of 36 miles. per hour. if they both head out at the same time, who will arrive first and by how many minutes?

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Answers (2)

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Hobbes · Answer 1

60 minutes per hour / 12 miles per hour = 5 minutes per mile

2.4 miles * 5 = 12 minutes for Gretchen

60 / 36 = 1.67 minutes per mile

8.4 * 1.67 = 14 minutes for Henrik

Gretchen arrives first by 2 minutes

Hillary Stark · Answer 2

1) t=S/U=2.4/12=0.2

2) t=S/U=8.4/36=0,23

3) 0.23-0.2=0.03