Common Mistakes on answering questions test, answering, practical, mistakes

Carson

I want to make a list of practical advices/tips on common mistakes that occur when take our mocks tests. I hope people can add to this list so on the test date we’ll be able to easily correct ourselves.
1: when we calculate ratios, mixed ratios (I/S / B/S) have average B/S values when we are given two time periods.