How old is Mum?
来源:百度知道 编辑:UC知道 时间:2024/05/18 12:21:52
A.Mum,how old are you?
B.Last year's age pius this year's age is 59,How old am l?
A.Oh,you are( ).
()里面填数字!
B.Last year's age pius this year's age is 59,How old am l?
A.Oh,you are( ).
()里面填数字!
30
X+(X+1)=59
X=29
x+1=30
今年30
30
last year is 29
this year 30
29 plus 30 equals to 59
所以空格里是30.
脑残,30,59-1=58,58一半=29,29+1=30
30
29+30=59
29+30=59所以今年30岁
加分吧
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