bullshit question cuz they don't specify what "half" means...does it mean distance or time?
of course its gonna be less distance if half means time, cuz your gonna be going 21mph longer than 24mph to get the same distance for each time, but if its time, then the distance is the same and its the easiest equation. that question is bullshit.
On Thu, Jun 14, 2012 at 5:33 PM, Madness <nayrrizdaed@gmail.com> wrote:
the answer was 224 km, not 225.
(b) Let the total distance = 2x
(x/21) + (x/24) = 10. (8x+7x)/168 = 10. 15x=168*10 ... x=(168*10)/5 ..x = 112
2x =224. No idea how this is how you do this. simple v=d/t shows that the answer is 225. no idea why they take the v=d/t formula and make it more comlpicated.
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Posted By Madness to Madness Writers at 6/14/2012 02:33:00 PM
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