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Re: If a, b, and c are positive integers such that a is divisible by b, an
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13 Dec 2015, 09:14
[quote="Bunuel"]If a, b, and c are positive integers such that a is divisible by b, and c is divisible by a, which of the following is NOT necessarily an integer?
A. (a + c)/b B. (c - a)/b C. ca/b D. (c + b)/a E. cb/a
Ans:-D
a=bx.........(1) c=aY.........(2)
a. (A+C)/B = (bx+ay)/b = (bx+ bxy)/b =x+xy=integer b. (c-a)/b = (ay-a)/b = a(y-1)/b = bx(y-1)/b = integer.
Re: If a, b, and c are positive integers such that a is divisible by b, an
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04 Feb 2019, 05:33
Hello from the GMAT Club BumpBot!
Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
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81% (01:43) correct 
