A person writes 10 pages per hour. After 3 hours, his writing speed drops by 30%. How long will he take to complete a 100-page report?
Correct answer: C. 13
- A. 10
- B. 10.5
- C. 13
- D. 11.5
Explanation
The person writes 10 pages per hour for the first 3 hours, completing 30 pages. After 3 hours, the writing speed drops by 30%, so the person writes 7 pages per hour (70% of the original speed). To complete the remaining 70 pages, it takes 10 more hours at this reduced speed. The total time calculated is 13 hours
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