human
James writes from 1 PM to 4 PM every night. He can write 5 pages per hour. How many weeks will it take to finish his 735-page book?
assistant
How many hours does James write each day? ** He writes for 4-1=<<4-1=3>>3 hours per day
How many pages does James write each day? ** That means he writes 3*5=<<3*5=15>>15 pages per day
How many days will it take James to finish his book? ** So it would take him 735/15=<<735/15=49>>49 days
How many weeks will it take James to finish his book? ** That means it will take 49/7=<<49/7=7>>7 weeks
#### 7