Posts by Kyhl

    1) p = b + 4v

    2) m = (p - 4) + 2c + 3v

    3) m - p = b

    4) b + c = 11


    There are four equations with 5 unknowns - no direct solution possible.

    Therefore, we create four equations, where the four icecreams are dependent on only the fifth:


    1) Clean up 4th equation

    b + c = 11 =>

    b = 11 - c


    2) Replace b in 1st, 2nd, and 3rd equation

    p = 11 - c + 4v

    m = p - 4 + 2c + 3v

    m - p = 11 - c


    3) Combine 2nd and 3rd equation

    m = p - 4 + 2c + 3v

    m - p = 11 - c => m = 11 - c + p


    p - 4 + 2c + 3v = 11 - c + p =>

    -4 + 2c + 3v = 11 - c =>

    2c + 3v = 15 - c =>

    3v = 15 - 3c =>

    v = 5 - c


    4) Replace b and v in first equation

    p = 11 - c + 4(5 - c) => p = 11 - c + 20 - 4c =>

    p = 31 - 5c


    5) replace p and b in 3rd equation

    m - (31 - 5c) = 11 - c => m - 31 + 5c = 11 - c => m = 11 - c + 31 - 5c =>

    m = 42 - 6c


    5) We now have four equations:

    b = 11 - c

    v = 5 - c

    p = 31 - 5c

    m = 42 - 6c


    In the 2nd quation we can see, that c spans from 1 to 4, so these values will be inserted in the equations:


    c = 1; b = 10, v = 4, p = 26, m = 36

    c = 2; b = 9, v = 3, p = 21, m = 30

    c = 3; b = 8, v = 2, p = 16, m = 24

    c = 4; b = 7, v = 1, p = 11, m = 18


    There is only one correct solution, where one of the ice creams wil cost 16 gold; the one where c costs 3 gold.

    You bought the pink one.


    This was fun, thanks:-)


    Kyhl, COM201 Big Ben

    That would be:

    THIS TRAIN WAS

    CONSTRUCTED

    IN THE CITY

    LA ROCHELLE

    For the bonus question, I would have to guess; it might be the Minerva- as the italian pendolino trains are produced in La Rochelle, but then the plate couldn't be that corroded. Therefore; the right answer must be the ICARUS TGV - also built in La Rochelle.


    Best regards

    Kyhl

    COM201 Big Ben