This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.
What this question is testing
Objective: Calculating a percent decrease
Prompt focus: A tablet priced at $400 is discounted 10%. What is the sale price before tax?
Why the correct answer works
360
The discount is 10% of $400, so the customer pays 90%: $360.
Why the tempting wrong answer fails
The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.
Plain-language takeaway
Review this skill: Calculating a percent decrease. Use the stem's deciding facts, then verify the choice against the units, timing, evidence, or safety condition stated in the question.
Simple analogy
Think of calculating a percent decrease like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.
How to review it before a retake
- Underline the command word and name what the question is asking before rereading the choices.
- Compare the correct answer against the closest distractor and write the exact detail that separates them.
- Retest this objective with a fresh question without looking at the rationale first.