Sum of the present ages of A, B, C and D is 68 years.

Statements: A @ Z, Z # L, L % N, N @ U

Conclusions:

I. A @ N

II. Z @ U

III. A # L

Statements:  A ≤ J ≤ K = M; Y ≥ Z > A

Conclusions:

I. J ≤ Z

II. Z ˃ Y

Statement: K = B; D ≥ L ≥ T ≥ B

Conclusion: I. D > K II. D = K

Statements: U > H ≥ W; S > T ≥ B; S < H; C ≤ D = U

Conclusions:

I. D > B

II. T < U

III. W ≤ D

Statements:

E ≥ H > O < R > U = X

Conclusions:

I. E < O

II. X = O

Statements: A % B & G @ T $ D; W % A # P

Statements: V > R ≥ W < Z; X ≤ W; U < R ≤ Y

Conclusions:

I. X < Z

II. W < Y

III. Z > U 

Statements: A ≥ B ≥ C = M = N ≥ O ≤ P ≤ Y = Z

Conclusions:

I. Y > M

II. Z ≤ A