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Sweden Contests
Swedish Mathematical Competition
2006 Swedish Mathematical Competition
4
4
Part of
2006 Swedish Mathematical Competition
Problems
(1)
Value of Pearls
Source: 2006 Swedish Mathematical Competition #4
1/5/2018
Saskia and her sisters have been given a large number of pearls. The pearls are white, black and red, not necessarily the same number of each color. Each white pearl is worth
5
5
5
Ducates, each black one is worth
7
7
7
, and each red one is worth
12
12
12
. The total worth of the pearls is
2107
2107
2107
Ducates. Saskia and her sisters split the pearls so that each of them gets the same number of pearls and the same total worth, but the color distribution may vary among the sisters. Interestingly enough, the total worth in Ducates that each of the sisters holds equals the total number of pearls split between the sisters. Saskia is particularly fond of the red pearls, and therefore makes sure that she has as many of those as possible. How many pearls of each color has Saskia?
combinatorics
Sweden