Pubey
Guest
Often you don't need a calculator - some of the answers are obviously wrong. This can save time, rather than taking a while working out exact answer look at the question, do a rough back of stamp calculation in your head and then select closest answer. For example in q5 - store A has 68% and store B has 70% - so answer is between 68 and 70 - only 1 answer is.
68.0% is between 68 and 70, and by the time you've worked out the 68 and 70 you might as well do the final step. i wouldn't recommend answering them by a process of elimination, when we write maths questions we look to create wrong answers that could be right is a simple error is made or if people are just eyeballing the question
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