Question

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?

Answer 1

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

Answer 2

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