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Bunuel
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A

1) the first statement states that j and k are co primes. and co-primes don't share any other factor than 1.suff
2)product of j and k is divisible by 5. this does not mean there aren't any other factors.not suff
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Here is my approach =>
WE need to get the GCD of J and K
Statement 1 => J=K+! => J and K are coprimes
Hence GCD = 1 => Suff
Statement 2 => J=5,K=10=> GCD=5
J=5,K=6 => GCD =1 => Hence using the "TEST CASE Approach" => not suff
SMASH THAT A
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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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