IanStewart wrote:
Yes, in this question, the number in the numerator of the right answer must be a factor of 9 (the above replies aren't correct on that point, or are answering a different question) but you need to solve almost the whole problem to see that, so I'm not sure there's any great advantage to the observation.
Yes, I am just talking about THIS specific question. My observation could not be correct in all cases, probably.
IanStewart wrote:
I don't understand your question about the answer choices: some answers (A, B and C) suggest n is more than half a tank, some (D and E) suggest n is less than half a tank.
So far I know that GMAC does not make any any answer options randomly-they definitely have logic
how they make answer option.
Choices D (9/4=2.something) and E (7/3=2.something) are more than 2 (apart from the value of n), but in choices A (10/9=1.something), B (4/3=1.something) and C (3/2=1.something). I've just curiosity why three answer options are a bit greater than 1 and the remaining two are greater than 2.
IanStewart wrote:
If you can see from the fractions in the question that n represents less than half a tank, you can get down to D or E, but seeing that takes about as much time as just solving the problem, and then you don't need to guess at all
Yes, get it....
appreciating your help...