The task is to generate the correct answer for a given math problem.

Problem: a man buys 60 pens at marked price of 46 pens from a whole seller . if he sells these pens giving a discount of 1 % , what is the profit percent ?
29.13 %

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 ?
200

Problem: a train 150 m long can cross an electric pole in 3 sec and then find the speed of the train ?
180