Results 1 to 7 of 7

Math Help - can u help me for this question of algebra

  1. #1
    Member moonnightingale's Avatar
    Joined
    Sep 2009
    Posts
    135

    can u help me for this question of algebra

    A moving sidewalk at an airport glides at a rate of 1.2 feet per second. Walking on the moving sidewalk, you travel 160 feet forward in the same time it takes to travel 64 feet in the opposite direction. Find your walking speed on a nonmoving sidewalk. Your Walking speed is ________ feet per second.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    -1
    e^(i*pi)'s Avatar
    Joined
    Feb 2009
    From
    West Midlands, England
    Posts
    3,053
    Thanks
    1

    Re: can u help me for this question of algebra

    Quote Originally Posted by moonnightingale View Post
    A moving sidewalk at an airport glides at a rate of 1.2 feet per second. Walking on the moving sidewalk, you travel 160 feet forward in the same time it takes to travel 64 feet in the opposite direction. Find your walking speed on a nonmoving sidewalk. Your Walking speed is ________ feet per second.

    Forward: (v_s + v_1)t = 160 \text{  .... EQ1}

    Backwards: v_s t = 64 \text{ .... EQ2}


    You are told that v_s = 1.2 and that t is the same in both directions (so that will cancel). Solve for v_1
    Last edited by e^(i*pi); September 2nd 2011 at 01:02 PM. Reason: edited out superfulous info
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member moonnightingale's Avatar
    Joined
    Sep 2009
    Posts
    135

    Re: can u help me for this question of algebra

    This gives me the value of v1 as 1.8 ft/sec
    is this answer correst
    Follow Math Help Forum on Facebook and Google+

  4. #4
    -1
    e^(i*pi)'s Avatar
    Joined
    Feb 2009
    From
    West Midlands, England
    Posts
    3,053
    Thanks
    1

    Re: can u help me for this question of algebra

    I get 1.8 ft/sec

    If the book's answer is 4.2ft/sec then they've used -v_st = 64. The minus sign would come from the fact the sidewalk is moving in the opposite direction.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Member moonnightingale's Avatar
    Joined
    Sep 2009
    Posts
    135

    Re: can u help me for this question of algebra

    What i think that 4.2 is most appropriate answer as per scenario
    What do u say
    Follow Math Help Forum on Facebook and Google+

  6. #6
    -1
    e^(i*pi)'s Avatar
    Joined
    Feb 2009
    From
    West Midlands, England
    Posts
    3,053
    Thanks
    1

    Re: can u help me for this question of algebra

    Quote Originally Posted by moonnightingale View Post
    What i think that 4.2 is most appropriate answer as per scenario
    What do u say
    I would be inclined to agree.
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Member moonnightingale's Avatar
    Joined
    Sep 2009
    Posts
    135

    Re: can u help me for this question of algebra

    Quote Originally Posted by e^(i*pi) View Post
    I would be inclined to agree.
    Thanks a lot
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Algebra Question
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 28th 2010, 07:29 PM
  2. Can anyone help me with algebra question
    Posted in the Algebra Forum
    Replies: 1
    Last Post: June 23rd 2009, 01:45 AM
  3. Another Algebra Question
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: July 23rd 2008, 08:31 AM
  4. Algebra question
    Posted in the Algebra Forum
    Replies: 3
    Last Post: June 14th 2007, 02:16 PM
  5. Algebra question
    Posted in the Business Math Forum
    Replies: 1
    Last Post: July 31st 2005, 08:55 PM

Search Tags


/mathhelpforum @mathhelpforum