Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
A train travels from a station B to station C using path P, [#permalink]
17 Jan 2007, 12:45
This topic is locked. If you want to discuss this question please re-post it in the respective forum.
A train travels from a station B to station C using path P, while it returns using a different path. If the average speed on path P is 60km/hr, what is the average speed for the round trip?
1) The average speed on the back trip is 2/3 of the average speed on path P
2) The path P is 1/3 times longer than that of the back route.