In a study of the domestic market share of the three major
automobile manufacturers A, B, and C in a certain country, it was
found that their current market shares were 50%, 35%, and 15%,
respectively. Furthermore, it was found that of the customers who
bought a car manufactured by A, 75% would again buy a car
manufactured by A, 15% would buy a car manufactured by B, and 10%
would buy a car manufactured by C. Of the customers...