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DPChallenge Forums >> Current Challenge >> Can someone work this out for me
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AuthorThread
06/03/2007 03:35:08 PM · #1
havent got my math(s) head on today, so

Score was
votes 105
score 7.0476

One vote later
votes 106
score 7.0283

what vote did I get? anyone let me know the formula for working it out.

thanks everso.
06/03/2007 03:40:11 PM · #2
Assuming no one changed an already-cast vote within that time frame, then you got a 5. (106*7.0283)-(105*7.0476)=5 (within rounding error).

Edit:
The general formula , for when more than one vote may have been cast is:

(Vf*Sf - Vi*Si)/Vf-Vi

Where Vi and Vf are the initial and final number of votes and Si & Sf are the initial and final scores.

Message edited by author 2007-06-03 15:43:32.
06/03/2007 03:40:32 PM · #3
Solve for x

[(105 * 7.0476) + x]/106 = 7.0283

x=5
06/03/2007 03:50:33 PM · #4
your score ≥ 7.0283
my score ≤ 5.9

x = I hate you.

Can you work out what score I'm going to give you?
06/03/2007 03:58:05 PM · #5
Originally posted by mk:

your score ≥ 7.0283
my score ≤ 5.9

x = I hate you.

Can you work out what score I'm going to give you?


a 10 cus we bestest mates in the world.

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