Two freight trains, each 1/6 kilometer long and traveling 60 kilometers per hour, meet and pass each other.
How many seconds is it between when the locomotives pass each other and the cabooses pass each other?
Solution to the Problem:
The answer is 10 seconds.When the locomotives meet, the cabooses are 2/6 = 1/3 km apart and the net approach speed is 120 km/hr.
It takes them 1/360 hour = 10 seconds to meet.
Correctly solved by:
| 1. James Alarie | Flint, Michigan |
| 2. Kelly Stubblefield | Mobile, Alabama |
| 3. Math Club |
Unity Charter School, Morristown, New Jersey |
| 4. Ivy Joseph | Pune, Maharashtra, India |
| 5. Brijesh Dave | Mumbai City, Maharashtra, India |