GRE General TestQuantitative ReasoningMedium
A production line produces 2,400 items per day. Due to an efficiency improvement, the production rate increases by 25%. If the line operates for 5 days a week, how many items are produced in a week with the new rate?
- A15,000
- B20,000
- C12,000
- D18,000
Show answer & explanationAnswer & explanation
Correct answer: A. 15,000
Initial daily production: 2400 items. Increase by 25%: 2400 * 0.25 = 600 items. New daily production: 2400 + 600 = 3000 items. Weekly production: 3000 items/day * 5 days/week = 15,000 items.
Why the other options are wrong
- B. This is a plausible distractor, possibly from an incorrect percentage calculation.
- C. This is the production without the increase (2400 * 5).
- D. This is a plausible distractor, likely from a calculation error.
Multi-Step Percentage Increase
Solving a problem that involves calculating a percentage increase and then applying that new value in further calculations.
- Often requires sequential calculations.
- First, find the new value after the percentage change.
- Then, use this new value in subsequent steps.
Memory trick: First the boost, then the week; production numbers we seek!