Question 366897
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Hi, 
Let x represent the amount a son is left as part of the estate:
w =2x  (twice the son)
D = 4x (twice the wife)
As there were twins.. estate is split 7 ways
Son = 1/7
Daughter = 4/7
Wife = 2/7

1/7 + 4/7 + 2/7 = the whole estate