中科新闻网任盈盈真假令狐冲水底:帮忙做做题
来源：百度文库 编辑：中科新闻网 时间：2024/04/29 02:12:25
1.甲数是乙数的4分之3,乙是丙的5分之2,甲数是丙数的百分之几?
请用小学的方法!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
请用小学的方法!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
解：设甲为X，乙为Y，丙为Z
由题意得：X=3/4 * Y
所以 Y= 4/3 * X
带入 Y=2/5 * Z
得 4/3 * X = 2/5 * Z
所以 X = 6/20 * Z
即 X = 30% Z
答：甲数是丙数的百分之三十
甲为x 乙为y 丙为z
3*x/4=y
2*y/5=z
代入 得 3*x/10=z
30%
30%