A researcher reviews 40 papers in 10 days. Midway, workload increases by 50%. If pace remains, how many more days needed?
Correct answer: C. 7.5
- A. 5
- B. 6
- C. 7.5
- D. 8
Explanation
Initially, the researcher reviews 40 papers in 10 days, equating to a pace of 4 papers per day. After 5 days, 20 papers have been reviewed, leaving 20 papers. The workload then increases by 50%, so the remaining workload becomes 20 x 1.5 = 30 papers. With the constant pace of 4 papers per day, completing the remaining 30 papers will take 30 / 4 = 7.5 more days. Therefore, the correct answer is 7.5 days. Options A, B, and D fail to correctly adjust for the increased workload while maintaining the same pace, leading to inaccurate calculations.
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