Task: Question Answering
Input (English): Problem: on a certain transatlantic crossing, 30 percent of a ship ' s passengers held round - trip tickets and also took their cars abroad the ship. if 60 percent of the passengers with round - trip tickets did not take their cars abroad the ship, what percent of the ship ' s passengers held round - trip tickets ?
Options: a. 33.3 %, b. 40 %, c. 50 %, d. 60 %, e. 75 %
Output (English): e