哥哥5年前的年龄和妹妹3年后的年龄相等,当哥哥______岁时,正好是妹妹年龄的3倍.
人气:318 ℃ 时间:2020-05-14 09:48:55
解答
5+3=8(岁),
8÷(3-1)
=8÷2,
=4(岁);
4+8=12(岁);
答:当哥哥12岁时,正好是妹妹年龄的3倍.
推荐
猜你喜欢
- 为什么横截面是梯形的容器盛放液体,其压强和压力计算比较特殊?
- 请问这“个调查显示”是用“The research revealed that”还是The research has revealed that
- 1.已知点A(X,4-Y),点B(1-Y,2X),是关于Y轴对称,写出Y的X次方的值
- 六一班同学上体育课,排成3行少一人,排成四行多三人,排成5行少1人,至少有同学多少名?
- You are saying that everyone should be equal,and this is ( )they disagree,
- ()mang children like KFC ,I think they’d better try not to eat it too often
- 圆柱体积计算公式
- 选择题_______ fine weather today