105.DS: the ratio of teacher to student in school M is the same as that in school P ask about the ratio of student in school M to student in school P
1).Student in M is 10000 more than student in P
2). the ration of teacher to student is 1/20 in both M and P
Ans-- E
[确认]
答案应该是B吧作者: tongxun 时间: 2003-2-4 23:15
it cannot be B
1/20=2/40=4/80
20/40=1/2
20/80=1/4
right?
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