If s and t are positive integer 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
HAVE FUN!
A)2
B)4
C)8
D)20
E)45
HAVE FUN!
well if you put it in equation form:
s/t = Qt + R
s = Q + r/t
64 + 12/100 = s
R/T = 12/100 = 3/25.
The remainder is some multiple of 3, the only answer choice which is a multiple of 3 is E. (45)
you can also do it as s/t = 6142/100 = 1603/25
which has a remainder of 3, so from this as well, you can tell the remainder has to be some sort of a multiple to 3.
IMO E.
