Task: Question Answering
Input (English): Problem: in 12 pumps can raise 1218 tons of water in 11 days of 9 hrs each , how many pumps will raise 2030 tons of water in 12 days of 11 hrs each ? 
Options: a ) 12 , b ) 15 , c ) 18 , d ) 21 , e ) 22
Output (English): b