public void reportOnSpeed( int horsepower){
    int ratio = weightInKilos / horsepower ;
    if( ratio < 3){
    System.out.println("The vehicle i s going a t a fast speed.") ;
    } else if(( ratio >= 3)&&( ratio < 8)){
    System.out.println("The vehicle i s going an average speed.") ;
    } else {
    System.out.println("The vehicle i s going a t a slow speed.") ;
    }
    }