Two friends

Two friends met as a good man perish together for a beer. After recovery the most important topics (politics, women, football ...), one asks:
- And how many do you have children?
- I have 3 children.
- And how many years have?
Friend already not want to answer a direct question directly, and then he says:
- The product of their years equals the number 36 and the sum of the years the number of beers we drank here today.
Second to think and says:
- That is not enough!
- You're right, the oldest have bigger ears!

Result

a =  2
b =  3
c =  6

Solution:

abc=36 36=2 2 3 3 a<b<c a=2abc=36 \ \\ 36=2 \cdot \ 2 \cdot \ 3 \cdot \ 3 \ \\ a<b<c \ \\ a=2
b=3b=3
c=2 3=6 x=a+b+c=2+3+6=11 y=a b c=2 3 6=36 c=6c=2 \cdot \ 3=6 \ \\ x=a+b+c=2+3+6=11 \ \\ y=a \cdot \ b \cdot \ c=2 \cdot \ 3 \cdot \ 6=36 \ \\ c=6



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