c= # of existing clients
n= # of new clients
they're asking for (c+n)/c or 1+ (n/c) which is the ratio of new clients to existing clients.
1. c/n= 12.
Because we're only looking for a ratio, we don't need any real numbers. Sufficent
2. c= 144
Nothing there. Insufficient
A.
GMAT Prep2?? (Company X)
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