The sales understanding subtest contains 15 ASVAB questions with a total duration of only 13 minutes, which corresponds to approximately 51 seconds per question. There are four types of questions and the topic is often unknown in design. You can know more info about using the strategies to achieve the best chance of success in the subtest.
Basic questions about the idea
Very often you will find the main idea in the first or last sentence. If you pay attention to words like, but still, even though the idea usually changes direction. They are called "contrast notes" and the main idea is usually found soon afterward in this section.
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The correct answer to a detailed question is usually a preface of something you can find in this section. Don't overdo the analysis and don't look for the main idea. You should be able to easily disqualify some answers because they are contradictory or extreme.
If after reading the question you first find that you have a conclusion, this is a good indication that you should read that part very carefully. The answer is there, but not. Stick to the facts and what is directly implied in this section.
As you read, think about your own words that can be used in sentences. See if a word like that is one way to answer. Also, look for words that are contrary to what you think so that you can disqualify the decision. The answer can come to you through the process of elimination.