麻烦大家帮忙解答一下这道题，多谢。

candybobo711 · 发表于 2011-1-2 22:03:32

If s and t are positive integers such that s/t=64.12, which of the following could be the remainder when s is divided by t?A.2
B.4
C.8
D.20
E.45

sdcar2010 · 发表于 2011-1-2 22:14:55

E

S = 64t + 0.12*t =64t + 3*t/25

So the remainder must have a factor of 3.

candybobo711 · 发表于 2011-1-2 22:33:03

懂了，多谢！

lastjuly · 发表于 2011-7-16 20:48:29

E

S = 64t + 0.12*t =64t + 3*t/25

So the remainder must have a factor of 3.

-- by 会员 sdcar2010 (2011/1/2 22:14:55)

数学达人啊，thx!~

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