Assume that S/A=7.0, D/A=.40, N/E=.80 and A = D + E. Solve for N/S.
To find the value of N/S, we need to rearrange the given equations and substitute the given values.
First, let's rearrange the equation A = D + E to isolate E:
E = A - D
Now substitute the given values:
E = A - D
E = D/A - D
E = (D - AD)/A
Next, substitute the value of E in the equation N/E = 0.80 to solve for N:
N/E = 0.80
N/(D - AD)/A = 0.80
N = 0.80 * (D - AD)/A
Finally, substitute the values of D/A = 0.40 and S/A = 7.0 in the equation N = 0.80 * (D - AD)/A:
N = 0.80 * (D - AD)/A
N = 0.80 * (0.40D)/7.0
N = 0.032 * D
Therefore, the value of N/S is 0.032 times the value of D.