Small question about boats and rivers - diyAudio
Go Back   Home > Forums > Member Areas > The Lounge

The Lounge A place to talk about almost anything but politics and religion.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 2nd April 2006, 09:16 AM   #1
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Default Small question about boats and rivers

Hereís one for the math heads.
I didnít solve it but according to a friend, itís doable.

Statement

Two ferry boats (A and B) operate on a river. Both boats have different (but constant) speeds.
At a given time they start off together at opposite sides of the river and meet 155m from the side where B started.
When they reach the other side both need to wait the reglementary 12 minutes before (each at their own time now) they can start crossing over again. During this second crossing they meet at 85m from the side where B took it's second start.

Question

How wide is the river?

/Hugo
  Reply With Quote
Old 2nd April 2006, 08:02 PM   #2
diyAudio Member
 
xplod1236's Avatar
 
Join Date: Dec 2003
Location: On the couch
Send a message via AIM to xplod1236
The river is 380 meters wide.
The speed of boat A is 45/31 times the speed of boat B.
There is not enough information to determine the speeds of the boats.
  Reply With Quote
Old 16th May 2006, 12:56 AM   #3
diyAudio Member
 
xplod1236's Avatar
 
Join Date: Dec 2003
Location: On the couch
Send a message via AIM to xplod1236
Anybody want to confirm?
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
hello! :) and a small question theblackknight Solid State 14 1st September 2007 02:18 PM
Small value resistor question Thomas001 Multi-Way 4 14th January 2005 02:15 AM
newbie question theil small psychosteve Multi-Way 9 1st October 2004 03:18 PM
A small question... maybe not Guydot Tubes / Valves 4 18th June 2003 02:49 PM


New To Site? Need Help?

All times are GMT. The time now is 11:59 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2