class TimeManager {

    public double getElapsedTimeInMinutes() {

        //long diffSeconds = diff / 1000;
        //long diffMinutes = diff / (60 * 1000);
        //long diffHours = diff / (60 * 60 * 1000);
        //long diffDays = diff / (24 * 60 * 60 * 1000);

        double currentTime = System.currentTimeMillis();
        return (currentTime - startTime) / (60 * 1000);

    }

    public  TimeManager();

}