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
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?
英語人氣：367 ℃時間：2019-10-17 02:22:28
優(yōu)質(zhì)解答
這是2010年NECCS試題：翻譯：當david的年齡是現(xiàn)在年齡的兩倍的時候,他的年齡是他的女兒jane五年后年齡的四倍.如果在1990年（四年前）,他的年齡是他女兒年齡的四倍,jane是什么時候出生的?1983年 令現(xiàn)在david年齡x,他...
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