Question

A engineer works at a plant out of town. A car is sent for him from the plant every day and this car arrives at the railway station at the same time as the train he takes. One day the engineer arrived at the station 40 minutes before his usual time and without waiting for the car, started walking to work. On his way he met the car and reached his plant 10 minutes before the usual time. The time duration for which the engineer walk before he met the car is

Answer 1

30 minutes i guess my dear