I read in a very slow deliberate way. Any sort of test takes me alot of time, but I rarely have to re-read anything.

At University one of my friends could read an average novel in approximately 30 mins. I could barely turn the pages as fast as she could read. It was comical to watch. She revised for most of her exams by reading the core texts the night before the exams.

Some people can read and comprehend much quicker than others. There's no point comparing yourself to others where skills like this are concerned.

PS. That girl once read a book in the time it took her boyfriend to go to the toilet. I hope it was a short book rather than a world record dump