Задача на Java

 public class Q232477260 { 
    public static void main(String[] args) { 
        for (int x = 1; x < 14; x++) { 
            for (int y = 1; y < 14; y++) { 
                for (int z = 1; z < 14; z++) { 
                    if (x + y + z == 15 && 15 * x + 20 * y + 30 * z == 250) { 
                        System.out.println("x = " + x + "; y = " + y + "; z = " + z); 
                    } 
                } 
            } 
        } 
    } 
} 

 x = 12; y = 2; z = 1