Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: She wants to read 200 + 400 + 300 = 900 pages total. She needs to spend 900 / 100 = 9 hours reading in the next three weeks. In minutes, she will need to spend 9 * 60 = 540 minutes. Thus, she should spend 540 minutes / 10 days = 54 minutes per day reading.
 The question and answer:
Jenny wants to read 3 books in the next 10 days. She can read 100 words per hour. If the first book has 200 words, the second book has 400 words, and the third book has 300 words, how many minutes per day, on average, should she spend reading?
The answer is 54