TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: how much interest will $ 10,000 earn in 9 months at an annual rate of 4 % ?

SOLUTION: $ 300

PROBLEM: Problem: a particular library has 75 books in a special collection , all of which were in the library at the beginning of the month . these book are occasionally loaned out through an inter - library program . if , by the end of the month , 80 percent of books that were loaned out are returned and there are 66 books in the special collection at that time , how many books of the special collection were loaned out during that month ?

SOLUTION: 45

PROBLEM: Problem: a trader sold an article on a certain price with 40 % profit . if he sold double of previous selling price then find its profit %

SOLUTION:
180 %