12dn94dst |
03-29-2007 05:04 PM |
Quote:
Originally Posted by DSTKellie
(Post 1420057)
Is there a website where that came from??
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Quote:
Originally Posted by DSTKellie
(Post 1420055)
This is mathematically incorrect. There is no possible way that in six years she be 5 times older than her son. Even if we count the nine months. The math is off in this equation. I saw the math work and it still is not proven once you solve for x.
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you'll find it on several websites if you google the first line of the joke in quotes.
as far as the math, i think you're making the same mistake i did initially in that i wasn't adding six years to the son's age also. initially i was doing x+6=5y, which indicates that in six years the mother would be five times older than the son is right now. it should be x+6=5(y+6); when they both have aged six years, the mom will be five times older than the son.
regarding solving for x, x doesn't have to equal a integer. as long as x equals something other than an operation of itself, the equation is solved for x and that value can be plugged in elsewhere. x was solved with x=21+y (the mother is currently 21 years older than the son).
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