B 2 hours and 20 minutes
First, Molly walks 3 miles east to Raven's house, which would take her 1 hour since she averages 3 miles per hour.
Then, Molly and Raven walk 4 miles north to the library. This would take them approximately 4/3 = 1 hour and 20 minutes (since they are walking at 3 miles per hour).
Finally, Molly walks 3 miles back home. This would take her 1 hour since she averages 3 miles per hour.
Overall, Molly spends 1 hour (to Raven's house) + 1 hour and 20 minutes (to the library) + 1 hour (back home) = 3 hours and 20 minutes walking during her whole trip.
3 hours and 20 minutes is equivalent to 3 hours and (20/60) * 60 minutes = 3 hours and 20 minutes = 3 hours and (1/3) * 60 minutes = 3 hours and 20 minutes = 3 hours and 40 minutes.
Therefore, option B, 2 hours and 20 minutes is the closest answer.
Molly walks to Raven's house, which is 3 miles due east of her house Then she and Raven Walk to the library, which is 4 miles due north of Raven's house. Molly then walks home. If she averages walking 3 miles per hour, how long does Molly spend walking during her whole trip?
A 1 hour and 40 minutes
B 2 hours and 20 minutes
C 3 hours
D 4 hours
E 5 hours
1 answer
3 answers