public class KontrakTipe {

    static int hitungDiskon(int totalBelanja, int persenDiskon) {
        return totalBelanja * persenDiskon / 100;
    }

    public static void main(String[] args) {
        int belanjaBudi = 250000;
        int belanjaSiti = 480000;

        int diskonBudi = hitungDiskon(belanjaBudi, 10);
        int diskonSiti = hitungDiskon(belanjaSiti, 15);

        System.out.println("Belanja Budi Rp" + belanjaBudi
                + " mendapat diskon Rp" + diskonBudi);
        System.out.println("Belanja Siti Rp" + belanjaSiti
                + " mendapat diskon Rp" + diskonSiti);
    }
}