GMATPrep - Company X client ratio

[malnv]

Hey ppl,

I had this question and am not able to figure out the reason for its answer..[/img]

[malnv]

I was assuming C, but OA is A.

[Stuart@KaplanGMAT]

(1) the ratio of old to new is 12:1

So, at the end of the year it has 13x clients, at the beginning of the year it had 12x clients.

So, the ratio of end:beginning is 13:12... sufficient.

(2) Had 144 clients at the beginning. No info about new clients: insufficient.

(1) is sufficient, (2) is insufficient: choose (A).

[malnv]

ohh. that was easy.. .. i knew i was missing something, but didn't click..

Thx,