數學的問題！！我有幾條數唔識做 想請大家幫忙!
2007-08-17 9:09 pm
1.Jacky is x years old.His age is 2times his son's age plus1, and is 3 times his daughter's age plus 2 If the sum of their ages is (98-x).Find their ages .
回答 (1)
2007-08-17 9:34 pm
✔ 最佳答案
1) X = 35, son = (X - 1) / 2 = 17, daughter = (X - 2) / 3 = 112a) 3/4 X + 28
b) 4/7 (3/4 X + 28) + 32 = X - 48
X = 168
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