Quant: maximum time to spend on any question?

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Quant: maximum time to spend on any question?

by yates » Wed Jun 22, 2011 9:13 pm
Can someone give me a ballbark figure here? How many minutes is "too many minutes" to spend working on a quant question?

Today on GMATPREP2, I did well on the early quant questions, but I took too much time. I had to rush through the final nine or ten questions, taking wild guesses on questions that seemed to become progressively easier. I just didn't have any time left.

Thanks.
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by Geva@EconomistGMAT » Wed Jun 22, 2011 10:59 pm
yates wrote:Can someone give me a ballbark figure here? How many minutes is "too many minutes" to spend working on a quant question?

Today on GMATPREP2, I did well on the early quant questions, but I took too much time. I had to rush through the final nine or ten questions, taking wild guesses on questions that seemed to become progressively easier. I just didn't have any time left.

Thanks.
you know the 2 minute per question rule, but that is actually a rule of thumb - some questions will take you longer than 2 minutes, and some will take you less than 2 minutes, and that's fine. As a general rule, no question is worth more than 3.0 minutes of your time, but all that isn't really important. What IS important is what you do once you realize that you're falling behind schedule.

what most people do is exactly what you desribe - rush through the questions at the end, making wild guesses and getting wrong even the questions where you stand a perfectly good chance of getting right, given enough time.

Let's say that you have 10 questions for 10 minutes. You will not be able to do all of them right. You will not be able to even READ all of them. 10 minutes is enough time to do 5 questions right, 4 questions if we're being realistic about your regular pace. Ideally, you would read each question and make an intelligent, informed decision whether you even want to try it and then work calmly on the few questions you decide that are doable, but at this point you have a little voice in your head screaming "No time!", and it's really hard to solve a question - even a carefully chosen, easy one - with someone screaming in your own head. Given this situation, your best bet is to resign to a "try one, guess one" routine, just so you'll be able to calm yourself down by telling yourself that you're not wasting time on reading questions you will not be attempting in the first place.

However, what if you didn't get to this stressful state in the first place? Having 10 questions in the last 10 minutes means that you're ~10 minutes behind schedule. That kind of gap doesn't open instantly. The earlier you catch on to the fact that you're falling behind schedule, the wider your field of options. You can start making the intelligent decisions you need to make - read the question and decide, given the fact that you're 2 minutes behind schedule (and not 10 minutes behind), whether THIS particular battle is the one you want to fight, or perhaps you are better off moving after 30 seconds to make up for lost time.

The bottom line is this - given what you're telling us here, I don't believe that you will be able to do all of the questions in the quant section - at least not do them well. Accept this fact, and start making strategic guesses early in the section, so at least you can keep the voice howling "no time!" in check and make conscious, intelligent decisions.
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by David@VeritasPrep » Thu Jun 23, 2011 12:55 pm
Let me just add to what Geva has said.

You asked for a specific figure and I would generally say "3 minutes should be the limit." That is the point where even if you get the question right you are probably going to have to guess on another question to make up for it.

Of course, this does not mean that when you are 2:45 into a question you should stop and guess. Far from it; if you are progressing toward the answer to a question take your time and get it right. But if when you start a question you get 1 minute to 1:15 into it and you are not sure where you are going, this is the type of question that you are likely to spend 3 + minutes on and possibly still end up guessing.

As Geva has said, you cannot put yourself in a position to be randomly guessing at so many questions in a row. You really do get penalized on the GMAT scoring system for missing questions that you should get right. So, it is much better for you to realize that a question is too difficult (or just not working for you) and guess at that one and get the questions right that are less difficult.

When you are practicing, I would have a stopwatch there and just start it when you are doing problems, you will want to know which types of problems you generally miss and ALSO which types of problems that spend More than 3 minutes on. These are the problems that you will either need to improve OR these might be the ones to guess at on test day. And watch out for problem types where you spend more than 3 minutes and you still miss it!!

Oh, and my favorite timing standard is when you have finished question 25 you should have minutes left. So for the last 12 questions you should have 25 minutes to go. I don't really go for an earlier standard because you may have had lots of long problems first or lots of short problems first so you might be far from the 2 minutes each standard on the first several, but by the time the you get to 25 questions you should know if you are a little behind.

As Geva says, if you find yourself behind by like 3 minutes or 5 minutes you should pick a couple of questions to guess at and focus on the other ones. You really cannot get questions right AND save time. If you save time you will likely miss them so focus on doing well with some and skipping the others.

But with these ideas in mind you will not get 10 minutes behind!
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by yates » Thu Jun 23, 2011 7:14 pm
Thanks!
GMATPrep1: (6/9/11); 690 (42 verbal; 41 quant); GMATPrep2: (6/22/11); 680 (42 verbal; 40 quant- ARGH!!)