更新1:
Sam's age is now 3 times Ben's age. 6 years later, Sam's age is will be less than 3 times that of Ben's age by 12. Find Ben's present age?
Sam's age is now 3 times Ben's age. 6yrs later, Sam's age is will be less than 3 times that of Ben's age by 12. Find Ben's present age.?
回答 (1)
2017-11-27 7:53 pm
Sam's age is now 3 times Ben's age.
6 yrs later, Sam's age will be less than 3 times that of Ben's age by 12.
S = 3B
(S + 6) = 3(B + 6) - 12
B = 6
Ben's present age is 6.
6 yrs later, Sam's age will be less than 3 times that of Ben's age by 12.
S = 3B
(S + 6) = 3(B + 6) - 12
B = 6
Ben's present age is 6.
收錄日期: 2021-04-29 22:52:45
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20171127105855AAiWS8t