Can't solve distance\speed problems. Tried everything. wt is wrong??

First of all, the fact that you've recognized this is a good sign. If you know that you aren't going to get a problem right the second you look at it, don't waste your time on it. It obviously isn't good to guess on a whole category of problems, but that's the lesser of two evils, when the alternative is missing all of those problems and also wasting your precious time. You're way ahead of test takers who don't realize that they always miss certain types of problems, and spend ages banging their heads against them anyways and getting nothing in return.

That said, since you presumably don't have to take the test tomorrow, you have time to fix this problem. Some advice:

- You need to get past the psychological barrier these problems are presenting to you. So, start with the very easiest ones in the Official Guide. It doesn't matter if you've seen them before!
- Many distance/rate/time problems are easier to understand when you draw a picture. Are you drawing out the situation before you start working?
- For many of them, writing out numbers (rather than doing the algebra) or even estimating is the correct solution. Get comfortable using these approaches on D/R/T problems, instead of feeling like you always have to do the algebra (or else you're doing it wrong).
- How are you organizing your scratch paper? Organization is key on these. Try always starting by writing down the equation "distance = rate * time", large and clear, and then creating a table underneath it.
- When you review them, don't just read the explanations. Not only is that generally a bad idea, from what you're saying here, it also hasn't worked for you in the past. Reading the explanation should be the very, very last thing you do when you review, if you do it at all. Instead, start your review by slowing down, taking a deep breath, and trying the problem a second time without a timer, taking all the time you need. If you get stuck, look at the answer LETTER, not the whole explanation, and see if you can work backwards from the right answer.
- There are only so many different types of rate/work problems. For instance - a lot of them will ask you to combine two workers' rates together to find the time they take when working together. This type of problem is always solved in exactly the same way. When you see one, take some notes on how you'd generally solve that type of rate/work problem, and work on recognizing that 'family' of rate/work problems when you see it in the future.

Good luck. Rate/work problems get a lot of hype, but I think that's just because they're often presented as 'brain teasers' or 'logic puzzles' rather than the simple math problems they are. They really aren't a big deal, and you shouldn't let them scare you!