Answer
(a) $C=4411.76~dollars$
(b) $C=25,000~dollars$
(c) $C=225,000~dollars$
Work Step by Step
(a) $C=\frac{25,000\times15}{100-15}=\frac{375,000}{85}=4411.76$
(b) $C=\frac{25,000\times50}{100-50}=\frac{1,250,000}{50}=25,000$
(c) $C=\frac{25,000\times90}{100-90}=\frac{2,250,000}{10}=225,000$
