Results 1 to 2 of 2

Thread: Need help with a math puzzle

  1. #1
    Jun 2017

    Need help with a math puzzle

    A fishing boat leaves a dock at noon and travels due west at 40 km/h. A second boat leaves the same dock 20 minutes later and travels due south at 51 km/h. At what time, to the nearest minute, will the two boats be 116 km apart?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Nov 2010

    Re: Need help with a math puzzle

    $\sqrt{\left(\dfrac{2t}{3}\right)^2+\left(\dfrac{5 1(t-20)}{60}\right)^2} = 116$

    Solve for $t$. That will be the number of minutes past noon. Only the positive result makes sense, so 1:59 pm.
    Last edited by SlipEternal; Jun 29th 2017 at 07:39 PM.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. One math puzzle
    Posted in the Math Puzzles Forum
    Replies: 4
    Last Post: Aug 18th 2014, 07:00 PM
  2. Math puzzle app for Android - how beautiful Math is!
    Posted in the Math Software Forum
    Replies: 0
    Last Post: Mar 18th 2014, 06:03 AM
  3. Math Puzzle-I need help!
    Posted in the Algebra Forum
    Replies: 9
    Last Post: Nov 18th 2009, 08:14 PM
  4. five 3s math puzzle please help
    Posted in the Math Challenge Problems Forum
    Replies: 2
    Last Post: Nov 18th 2007, 05:04 AM
  5. Math egg puzzle Help
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: Jan 24th 2007, 07:20 AM

Search tags for this page

/mathhelpforum @mathhelpforum