Cut down time on Writting and Reading section.

I pretty much have the math part down but when it gets to those 2, i get lost.
Can anyone describe any techniques to read those text faster.
Thank you!

For reading, my strategy is to read the first question and read the passage up until I find the answer (line numbers are part of the question). I ignore the main idea type questions until I finish all the other questions. This way, I am answering the questions as I read along, and I am not confused by the other parts of the passage.