What is the single discount equivalent to the successive discounts of 20%, 30%, and 10%?

Statements: H @ B, B * E, V © E, W $ V

Statements: T < U = V = W < X < Y; Z = Y < R < S < O

Conclusions:

I. Z > U

II. T < O

Statement: L = C; E ≥ M ≥ U ≥ C

Conclusion:

I. E > L

II. E = L

Statements: B % L, L & Y, Y @ I, I # Q

Conclusions: I. Q & Y                       II. B # I

What is the place of question mark (?) in the given expression does the expression L < I and W > L is definitely true?

W = P ≥ M ? L ; P ≤ I

Statements:  J @ R % S % B; S $ Y $ Z

Statement: M < N ≤ O = P, Q ≥ O ≤ R ≤ Z

Conclusion: I. Q > M                       II. Z > M

Statement: E < F ≤ G = H, I ≥ G ≤ J ≤ K

Conclusion: I. K > E          II. H > K

Statements: O > M = Q > S; M ≥ K > A; Q ≤ O < E

Statement:  P = Q ≥ S ≥ T < O < Z ≥ X; T > H

Conclusion:

I.  H ≥ X

II.  P > H