Task: Question Answering
Input (English): Problem: the charge for a single room at hotel p is 20 percent less than the charge for a single room at hotel r and 10 percent less than the charge for a single room at hotel g . the charge for a single room at hotel r is what percent greater than the charge for a single room at hotel g ? 
Options: a ) 15 % , b ) 20 % , c ) 12.5 % , d ) 50 % , e ) 150 %
Output (English): c