Solution: Mamma's Age

The code...

local
   proc {Mamma X}
      M = {FD.decl} 
      P = {FD.decl} 
      T = {FD.decl}
      I = {FD.decl}
     
   in
      X = [M P T]
      M + P + T =: 70 * 12
      6 * T =: P
      (T + I) * 2 =: P + I
      M + I + P + I + T + I =: 2 * (M + P + T)
      {FD.distribute split X}
   end

in
   {ExploreAll Mamma}
end

After clicking on the solution node, the Browser shows

1#[350 420 70]

which are, of course, the ages of Mamma, Papa, and Tommy in months, respectively.

Markus Löckelt