A boy is 42 years younger than his father .In 8 years times , he will be 1/4 times as old as his father .Find their present ages.?
回答 (1)
2017-10-10 8:54 pm
✔ 最佳答案
Sol國中作法
設兒子現在x歲
父親現在x+42歲
(x+42+8)=4(x+8)
x+50=4x+32
3x=18
x=6
國小作法
父親兒子永遠相差42歲
8年後兒子年齡=42/(4－1)=14歲
14－8=6
兒子現在6歲
收錄日期: 2021-04-30 22:43:58
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20171010122459AABnIUm