Task: Question Answering
Input (English): Problem: farm tax is levied on the 25 % of the cultivated land. the tax department collected total $ 3840 through the farm tax from the village of mr. william. mr. william paid only $ 480 as farm tax. the percentage of total land of mr. willam over the total taxable land of the village is :
Options: a. 15 %, b. 25 %, c. 50 %, d. 0.2083 %, e. none
Output (English): c