Aussie Best Car (ABC)has now decided to award an additional bonus based on the bonus contributed by the sales of an individual car type. It decides to award an additional bonus of x% of the bonus contributed by the sales of Toyota Kluger,y% of the bonus contributed by the sales of Nissan Patrol and z% of the bonus contributed by the sales of Ford Territory.The additional bonus rates (i.e. the values ofx,yandz) will be determined by the board of directors of ABC.