楼楼能不能帮我找找分蛋糕的哪一道狗狗哇。。。找不到了。。。。 -- by 会员 ropingmoon (2011/7/24 8:57:39)
Four extra-large sandwiches of exactlythe same size were ordered for m students, where m > 4.Three of the sandwiches wereevenly divided among the students. Since 4 students did not want any of thefourth sandwich, it was evenly divided among the remaining students. If Carolate one piece from each of the four sandwiches, the amount of sandwich that sheate would be what fraction of a whole extra-large sandwich? A( m+4)/m(m-4) B (2m-4)/m(m-4) C(4m-4)/m(m-4) D(4m-8)/m(m-4) E(4m-12)/m(m-4) |