                                            100         
     1.         9 ~ 10                                                                        
     2.                                     30        15      2.5      1       50     20                      30     20      1.5      1       60     50                  40     25      1       80     50               
    3.   
     ①       8      4     1        2 ~ 3                                     40                         
     ②                  
     ③                                                         
      4.  
     ①                                                            
     ②        20 ~ 40     1500 ~ 2000     500 ~ 1000    1000             20 ~ 30    1 ~ 2     
      ③       1 ％ ~ 2 ％     5％ ~ 6％          