Task: Question Answering
Input (English): Problem: a person borrows 9000 for 9 years at 3 % p. a. simple interest. he immediately lends it to another person at 7 % p. a. for 9 years. find his gain in the transaction per year.
Options: a. 380, b. 360, c. 340, d. 300, e. 180
Output (English): b