23. Suppose that A = D + E and that D/A = 0.55. Solve for A/E. 24. Suppose that A =D + E and that D/A = 0.40. Solve for D/E. 25. Suppose that D + E = A, that N/A = .15 and that D/A = 0.75. Solve for N/E. 26. Suppose that S/A = 5.0 and N/S = .08. Solve for N/A. 27. Suppose A-D=E, that N = 20,000, E/A = 75 and N/E = .40. Compute D/A. 28. Assume that S/A = 6.5, D/A = .40, N/E= 75 and A =D + E. Solve for N/S