Task: Question Answering
Input (English): Problem: a ship 77 km from the shore , springs a leak which admits to 9 / 4 tonnes of water in 11 / 2 minutes . 92 tonnes of water would sink it . but the pumps can throw out 12 tonnes of water per hour . find the average rate of sailing so that the ship may just reach the shore as it begins to sink . 
Options: a ) 10.5 , b ) 11 , c ) 12 , d ) 13 , e ) 15
Output (English): a