 
 <prompt> ```A library get 100 historical novels wey dem arrange for shelf. 5 people borrow 2 books each from the shelf on one particular day, and 20 more books dey borrow from the shelf on the second day. How many books remain for the shelf after the second day?``` <response>: ```Five people borrow 5 people * 2 books/person = 10 books on the first day.
After the second day, the total number of borrowed books increase to 10 books + 20 books = 30 books.
The total number of books on top the shelf after the second day na 100 books - 30 books = 70 books

The final answer: 70.``` 