Question

Graham is given a 2000-word hand-written document, and he typed for 30 minutes at the same rate as on his test. Then he took a break and handed the document to Claire to complete. Claire estimates that it will take her about 36 minutes to complete the document. What error did Claire make, and what's the actual time it will take her to complete the document?

A. Claire underestimated the time; it will take her 45 minutes.
B. Claire overestimated the time; it will take her 20 minutes.
C. Claire underestimated the time; it will take her 40 minutes.
D. Claire overestimated the time; it will take her 50 minutes.

Answer 1

Claire underestimated the time; it will take her 67 minutes to complete the document.

Step-by-step explanation:

The error that Claire made is that she underestimated the time it will take her to complete the document. We need to find the actual time it will take Claire to complete the document.

To find the actual time, we can calculate the difference between the total time Graham spent typing and the time Claire estimated it would take her. Graham typed for 30 minutes, so there's 30 minutes remaining for Claire to complete. Since it's a 2000-word document, we can estimate that she types approximately 67 words per minute (2000 words divided by 30 minutes). So it will take her approximately 67 minutes to complete the document. Therefore, Claire underestimated the time, and the actual time it will take her to complete the document is around 67 minutes.