class Multiples 
{
    public static void main(String[] args) 
    {
        int sum=0;
        int average=0;
        for(int i=1;i<=5;i++){
            int multiples=3*i;
            sum+=multiples;
        }
        average=sum/5;
        System.out.println("Sum of first 5 multiples of 3: "+sum);
        System.out.println("Average of first 5 multiples of 3: "+average);

    }
}