when david is twice as old as he is now he will four times as old as his daughter Jane will be in five years time .If in 1990 ,four years ago,he was four times as old as his daughter ,in what year was she born?
人气：218 ℃ 时间：2019-10-17 02:22:28
解答
这是2010年NECCS试题：翻译：当david的年龄是现在年龄的两倍的时候,他的年龄是他的女儿jane五年后年龄的四倍.如果在1990年（四年前）,他的年龄是他女儿年龄的四倍,jane是什么时候出生的?1983年 令现在david年龄x,他...
推荐
猜你喜欢
- 有一首歌曲里面的歌词有让我们笑的就像花儿一样,让我们跑的就像风一样,让我们牵着双手飞翔在这美丽又寂静
- She comes from singapore 疑问、提问
- The teacher will get a____ if you are late again
- 平行四边形的周长面积的公式
- 已知在等比数列{an}中,a3=-2,a6=54,则a9=
- I know this period of time is very difficult,but I also want to live!I don't want to die now,just want to quiet,quiet,qu
- I don't know,what's the situation.What is this?Why is that
- 喜羊羊在底面半径是6cm的圆柱形玻璃器放了一部分水,然后在水中浸没了一个高4.5cm完全取出时水面下降0.5cm
