Task: Question Answering
Input (English): Problem: the total cost of a vacation was divided among 3 people . if the total cost of the vacation had been divided equally among 4 people , the cost per person would have been $ 60 less . what was the total cost cost of the vacation ? 
Options: a ) $ 200 , b ) $ 300 , c ) $ 400 , d ) $ 720 , e ) $ 600
Output (English): d