other govt exam BARC DAE Junior Purchase Assistant / Junior Storekeeper Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
A 170 m long train is running at a speed of 70 km/hr on a bridge made above a river. A 10 m long boat is running downstream in the river and in the opposite direction of the train, such that the train crossed the boat in 7.2 seconds. If the speed of the stream is 4 km/hr, how much time will the boat take to cover a distance of 60 km upstream?
1
3 hrs
2
4 hrs
3
5 hrs
4
6 hrs