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Re: If r and s are nonzero integers, is r/s an integer ? [#permalink]

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28 Dec 2017, 21:36

(1) Insufficient: Only s =3 is given, as we dont know value of r. (2) Sufficient : r - 5s = s^2 r = s^2 + 5s r = s ( s + 5) r /s = ( s + 5) Now, (s+5) we know is an integer as s is an integer. Therefore, r/s is an integer. The correct answer is B.

gmatclubot

Re: If r and s are nonzero integers, is r/s an integer ?
[#permalink]
28 Dec 2017, 21:36