in my opinion,i think 600 yuan a mouth is not enough,i should spend 20 yuan on food everyday,so i spend 500 yuan a mouth,on sunday,if i want to go shopping,i buy some daily things that it is necessary and some snacks,so i will spend at least 100 yuan,if i have a friend call me go out to play,so i will spend some money,and there are many unexpected things may make me spend money,in a word,600 yuan a mouth is not enough,