maths
2006-10-19 1:34 am
Mark is m years old ,two years ago,his father is 4 times as old as he.find the age of his father
回答 (6)
2006-10-19 1:54 am
✔ 最佳答案
Mark is m years old now ,two years ago, hjs age was m-2and at that time, his father's age was: 4(m-2)
now, 2 years later, his father age is:
4(m-2) + 2
=4m-8+2
=4m-6
參考: 自己
2006-10-19 1:48 am
Mark's age (now) = m years old
Mark's age (2 years ago) = (m-2) years old
Mark's father's age (2 years ago) = 4(m-2) years old
Mark's father's age (now) = 4(m-2)+2
= 4m-8+2
= 4m-6
= 2(2m-3) years old
Mark's age (2 years ago) = (m-2) years old
Mark's father's age (2 years ago) = 4(m-2) years old
Mark's father's age (now) = 4(m-2)+2
= 4m-8+2
= 4m-6
= 2(2m-3) years old
參考: an university graduate
2006-10-19 1:39 am
=4 years old.
2006-10-19 1:38 am
(m - 2) X 4years
收錄日期: 2021-04-12 22:32:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061018000051KK02452