I used to use mostly Bluebook to study, but I switched to Aniko now. I still sometimes use Bluebook, but I primarily use Aniko. Which one is better to use, and should I take my practice tests on Bluebook or Aniko? I want to make sure I get accurate results on what my test score could be or might become. I ask because I had taken a practice test on Bluebook and gotten a 1090, and then the next day took one on Aniko and gotten a 1140.

Having some trouble with ratio questions

The correct answer was D. I always get this type of question wrong