A typist can type a document in 6 hours. After working for 2 hours, he realizes that the client sent a new version. If the changes require 50% more time than the original, how much more time is now needed?
Correct answer: C. 7 hrs
- A. 5 hrs
- B. 6 hrs
- C. 7 hrs
- D. 8 hrs
Explanation
Initially, the typist needs 6 hours to complete the document. After 2 hours of work, 1/3 of the document is done, leaving 4 hours of work. The new version requires 50% more time, making the total requirement 9 hours (6 original + 3 additional). Subtracting the 2 hours already spent, 7 hours are needed. Thus, Option C (7 hrs) is correct. Option A (5 hrs) and Option B (6 hrs) don't account for the additional time, while Option D (8 hrs) overestimates the time required for changes.
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