Task: Question Answering
Input (English): Problem: a, b and c started a business with a total investment of rs. 72000. a invests rs. 6000 more than b and b invests rs. 3000 less than c. if the total profit at the end of a year is rs. 8640, find b ' s share.
Options: a. rs. 3240, b. rs. 2520, c. rs. 2880, d. rs. 3360, e. none of these
Output (English): b