Question

A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?

Answer 1

 89 seconds or 1 hr 29 sec
distance upon time = time
   so  240/24 = 10 m /sec
   so time to cover 650 m =(240 +650/10 ) sec
                                         = 89 sec or 1 hr 29 sec