题目内容：

Jack is twice as old as Jill,
but in five years time he will only be one and a half times as old as Jill.How old are Jack and Jill now?

优质解答

Jack is twice as old as Jill, but in five years time he will only be one and a half times as old as Jill.How old are Jack and Jill now? 杰克的年龄现在是吉尔的两倍, 但五年后他的年龄只是吉尔的一点五...