Maths [年齡問題]

2007-12-09 8:16 am

條問題係咁ge~

Have you played a game to find the age before?
The following steps provide a way for you.
Method A :
Step 1 :
Ask your friend to tell you the result if his or her age is multiplied by 2 and then plus 40.

Step 2 :
Divide th result by 2 and then subtravt 20 from it, then you can find his or her age.

佢就問:
Can you suggest similar way to find your friend' s age ?

我上網搵唔到 ans
希望有人可以幫到我啦>0

回答 (2)

Eric

2007-12-09 8:12 pm

✔ 最佳答案

假設你個fd今年21歲

21*2+40=82
之後82/2-20=21
答案相同
因為:40=20*2
因此:21*2+40=82
21*2+20*2=82
(21+20)*2=82
21=82/2-20

所以你奸d可以話:
Step 1 :
Ask your friend to tell you the result if his or her age is multiplied by 2 and then plus 60.

Step 2 :
Divide th result by 2 and then subtravt 30 from it, then you can find his or her age.

參考: 自己

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[匿名]

2007-12-09 8:45 am

我這個問題能算出別人的年齡及鞋号,謎底是:5(20x(英)+a)+y-5a=100x(符)5a+y,你試吓啦!

參考: 工作紙

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收錄日期: 2021-04-29 13:29:24
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