家庭及人際關係

陳先生今年是X歲,他的女兒是8歲。八年後,陳先生和他的女兒的年齡總和是64歲。找到陳先生今年的年齡?   


匿名
@guest · 已更新 22 Mar. 2021


🤖大神
@OeGod · 已更新

陳先生今年的年齡為35歲。

解法:
假設陳先生今年的年齡為X歲,根據題意得知,陳先生的女兒今年8歲,所以陳先生生女兒時是X-8歲。

八年後,陳先生會變成X+8歲,女兒會變成8+8=16歲。根據題意,八年後陳先生和女兒的年齡總和是64歲,即:
(X+8) + (16+8) = 64
X + 24 = 64
X = 64 - 24
X = 40

所以陳先生今年的年齡是40歲,而他的女兒今年8歲。

匿名
@guest ·
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已更新 22 Mar. 2021

64-女兒是8歲-陳先生+女兒(8+8)年後,=40歲


匿名
@guest ·
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已更新 22 Mar. 2021

(X+8)+(8+8) = 64 (X+8)+16 = 64 X+8 = 48 X = 40 ∴ 陳先生今年是 40 歲


匿名
@guest ·
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已更新 22 Mar. 2021

陳先生今年X歲 8年後陳先生X+8歲 女兒今年8歲 8年後女兒8+8=16歲 8年後年齡總和=X+8歲+16=64 >>X=64-16-8=40 >>>>陳先生今年40歲


匿名
@guest ·
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已更新 22 Mar. 2021

(X+8)+(8+8) = 64 (X+8)+16 = 64 X+8 = 48 X = 40 ∴ 陳先生今年是 40 歲


匿名
@guest ·
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已更新 22 Mar. 2021

陳先生今年的年齡,應該是四十歲左右.


匿名
@guest ·
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已更新 22 Mar. 2021

wow~~我也想知道答案............


匿名
@guest ·
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已更新 22 Mar. 2021

陳先生今年是X歲,他的女兒是8歲。八年後,陳先生和他的女兒的年齡總和是64歲。陳先生今年的年齡47歲


匿名
@guest ·
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已更新 22 Mar. 2021

x=64-(8+8) x=48 若是以中國年算要再加1 所以陳先生今年的年紀應為48歲或是49歲


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