Compute the allowance factor for these two cases:
a. The allowance is 20 percent of job time.
b. The allowance is 20 percent of work time.
A = .20
a. AF = 1 + A = 1.20, or 120%
b. \mathrm{AF}\,=\,{\frac{1}{1-A}}\,=\,{\frac{1}{1\,-\,.20}}\,=\,1.25,\ \mathrm{or}\ 125\%