A is twice as old as B and B is half as old as C .If the sum of their ages is 65
years,how old is A?
點解&點do?
MATH F.1
2008-02-21 5:02 am
回答 (2)
2008-02-21 5:17 am
✔ 最佳答案
Let x be the age of C.C + C*1/2 + (C *1/2*2) = 65
C + 0.5C + C=65
2.5C=65
C=26
Therefore the age of A
=65 - 26 - 26*1/2
=65 - 26 - 13
=26
So the age of A is 26 years old.
2008-02-21 5:43 am
65/(2+1+2)=26
收錄日期: 2021-04-23 20:43:06
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