Results 1 to 2 of 2

Thread: Simple speed/length/time question (Urgent)

  1. #1
    Junior Member
    Oct 2008

    Simple speed/length/time question (Urgent)

    Okey, person A swims across a lake at 3km/h, where person B jogs around. Person A use the same time as Person B to swim across of the lake as Person B runs around it one time.

    What's the speed of Person B?

    To long since I've done this stuff so stuck atm... Any help would be greatly appriciated!

    Could it be 3/2*pi
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member
    Feb 2009
    person A swims in (2*r/3)hrs.

    so,speed of person B=(2*pi*r*3/2*r)km/h.
    =3*pi km/h.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 4
    Last Post: Dec 16th 2010, 03:22 PM
  2. Simple speed/distance/time questions
    Posted in the Algebra Forum
    Replies: 16
    Last Post: Mar 23rd 2010, 01:06 PM
  3. Speed-time question..
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: Mar 31st 2009, 01:47 AM
  4. Simple arc length question
    Posted in the Calculus Forum
    Replies: 2
    Last Post: Jan 28th 2009, 09:34 AM
  5. Replies: 0
    Last Post: Nov 5th 2008, 07:23 AM

Search Tags

/mathhelpforum @mathhelpforum