text: /**
   * @param preferences - target student focus
   * @param knowsProgramming - if student can do programming and know basics
   * @param config - private student ability to perform for different focus modes
   * @returns number of weeks needed for finish education
   */
  module.exports = function getTimeForEducation(
      focus = 'family', 
      knowsProgramming = true,
      config = {family: 4}
      ) {
        let time = 0 ;
        if (knowsProgramming ) {
          time = 800;
        } else  { 
          time = 1300;
        };
        const weeks = Math.ceil(time / config[focus]) ;
        return weeks
    };
    