2年前佢老豆既帥 數係佢既5倍
咁佢老豆now幾帥?
更新1:
book既ans係話5m-8
送分的maths題
回答 (7)
2007-09-23 8:40 pm
✔ 最佳答案
His father's age 2 years ago = (m - 2)* 5 = 5m - 10 Now, after 2 years,
his father's age = 5m - 10 + 2 = 5m - 8
2007-09-24 7:47 pm
小明2年前歲數 = m - 2
佢老豆2年前歲數 = 5 x (m - 2)
佢老豆宜家歲數 = 5 x (m - 2) + 2
= 5m - 10 + 2
= 5m - 8
佢老豆2年前歲數 = 5 x (m - 2)
佢老豆宜家歲數 = 5 x (m - 2) + 2
= 5m - 10 + 2
= 5m - 8
參考: me
2007-09-23 8:41 pm
佢老豆now好帥........
( m - 2 ) X 5 + 2
m是任何一個6-14的自然數(佢老豆2年前是20-60歲)
( m - 2 ) X 5 + 2
m是任何一個6-14的自然數(佢老豆2年前是20-60歲)
2007-09-23 8:11 pm
就係5m+2咩....果然簡單啊....hoho
2007-09-23 7:58 pm
小明現在係5m+2咁多歲
2007-09-23 7:58 pm
佢老豆now [5(m-2)+2] yrs old
2007-09-24 23:05:49 補充：
[5(m-2)+2] =5m-10+2=5m-8(yrs old)
2007-09-24 23:05:49 補充：
[5(m-2)+2] =5m-10+2=5m-8(yrs old)
收錄日期: 2021-04-25 21:44:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070923000051KK01435