Welcome Guest ( Log In | Register )


Tra Từ Điển online
 
Reply to this topicStart new topicStart Poll
> Crossing the river riddle

 
aimhigh
post Aug 29 2009, 01:29 PM
Post #1


Dzịt Mới
*

Group: Active Members
Posts: 28
Joined: 27-June 05
Member No.: 7,639



:D:

This post has been edited by aimhigh: Mar 14 2011, 09:28 PM
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

 
Tuấn Khang
post May 11 2010, 06:54 AM
Post #2


Dzịt Tí Hon
**

Group: Active Members
Posts: 67
Joined: 14-November 05
Member No.: 18,850



Yes, they can.
Add the names to them to make it easy to call.
Call the person who cross the bridge in 1, 2, 5, 10 minutes respectively 1, 2, 5, 10.

1st trip, 1 and 2 cross the bridge, takes 2 minutes.
2nd trip, 1 brings the lantern back, takes 1 minute.
3rd trip, 5 and 10 cross the bridge, takes 10 minutes.
4th trip, 2 brings the lantern back, takes 2 minutes.
5th trip, 1 and 2 cross the bridge, takes 2 minutes.
All of them cross the bridge in 17 minutes.

Or
1st trip, 1 and 2 cross the bridge, takes 2 minutes.
2nd trip, 2 brings the lantern back, takes 2 minutes.
3rd trip, 5 and 10 cross the bridge, takes 10 minutes.
4th trip, 1 brings the lantern back, takes 1 minute.
5th trip, 1 and 2 cross the bridge, takes 2 minutes.
All of them cross the bridge in 17 minutes.

This post has been edited by Tuấn Khang: May 11 2010, 09:49 PM
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Reply to this topicTopic OptionsStart new topic
 
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
 


·
| Forum| Blogs| Gallery | Help | Search | Members | Calendar | Time is now: 16th December 2017 - 06:21 PM

Skin edited by ACNK © 2005 VietLove