Task: Question Answering
Input (English): Problem: the sale price of a trolley bag including the sale tax is rs. 560. the rate of sale tax is 12 %. if the shopkeeper has made a profit of 25 %, the cost price of the trolley bag is :
Options: a. rs 1000, b. rs 900, c. rs 400, d. rs 600, e. none of these
Output (English): c