Solutions to WU’s puzzles and riddles : Ghetto Encryption 2 (medium)

Ghetto's Puzzle 2

I am trying to find all the solutions and put them together at a single place, So feel free to add comments and if you have a solution please do post . Cheers … 🙂

Here is the puzzles link : http://www.wuriddles.com/

Question : Three coworkers would like to know their average salary. However, they are self-conscious and don’t want to tell each other their own salaries, for fear of either being ridiculed or getting their houses robbed. How can they find their average salary, without disclosing their own salaries?

My Solution : Let the 3 idiots be A,B and C. First A will add some ‘x’ amount to his salary and give that final value to B. Will will add his salary plus some ‘y’ to the sum which A has given and then give the total sum to C. C will add some ‘z’ to his salary and then adds the total sum to A’s and B’s and passes back to A.

Now A will subtract ‘x’ and pass it on to B. B will subtract ‘y’ and will pass it on to C. C will subtract ‘z’ to get the sum of the salaries of A,B and C …:)


5 Responses to “Solutions to WU’s puzzles and riddles : Ghetto Encryption 2 (medium)”

  1. 1 Simplify
    January 10, 2013 at 9:23 pm

    Take any calculator and put non-transparent tape over the readout screen and clear the calculator. First person secretly enters their salary and hits +, second person secretly enters salary and hits +, third person secretly enters salary and hits +, then divides by 3.

  2. 2 Math Nerd
    February 19, 2013 at 11:16 pm

    This is so simple it’s almost funny! Where can I find more of these puzzles?

  3. June 3, 2013 at 6:39 am

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