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
Maths [年齡問題]
2007-12-09 8:16 am
回答 (2)
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
收錄日期: 2021-04-29 13:29:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071209000051KK00056