Discussion
Jennifer and Alice are 4 miles apart. If Jennifer starts walking toward Alice at 3 miles per hour and at the same time Alice starts walking toward Jennifer at 2 miles per hour, how much time will pass before they meet?
*This question is included in Nova Math - Problem Set X: Word Problems, question #10
| (A) | 20 minutes |
| (B) | ... |
| (C) | ... |
| (D) | ... |
| (E) | ... |
| (F) | ... |
The solution is
Posted: 08/02/2013 15:10
Or
Both of them walk for 4 miles as a TOTAL till they met,
Since D = R x T
2*t + 3*t = 4
5t = 4
T = 4/5 hour
T = 4/5 x 60 minute
T = 48 minute
Both of them walk for 4 miles as a TOTAL till they met,
Since D = R x T
2*t + 3*t = 4
5t = 4
T = 4/5 hour
T = 4/5 x 60 minute
T = 48 minute