Task: Question Answering
Input (English): Problem: in 1950, richard was 4 times as old as robert. in 1955, richard was 3 times as old as robert. in which year was richard 1.5 times as old as robert ?
Options: a. 1960, b. 1965, c. 1970, d. 1975, e. 2000
Output (English): e