The boat’s upstream speed is 10 km/h and it’s speed in still water is 17 km/h. What would be the stream rate?
1). 5 km/h
2). 7 km/h
3). 10 km/h
4). 14 km/h
Ajay travels the first 3 hours of his journey at 60 kmph speed and the remaining 5 hours at 24 kmph speed. What is the average speed of Ajay's travel in kmph?
1). 47.5 kmph
2). 27.5 kmph
3). 37.5 kmph
4). 45.7 kmph
A man can row 12 km/hr in still water. If the speed of the current is 3 km/hr, he takes 4 hours more in upstream than in the downstream. What is the distance (in km)?
1). 30
2). 45
3). 60
4). 90
A boat takes one-third the time travelling the same distance when it goes downstream than upstream. What is the ratio of the speed in still water to the speed of the current?
1). 3 : 1
2). 2 : 1
3). 1 : 2
4). 1 : 3
Two identical trains A and B running in opposite directions at the same speed take 2 min to cross each other completely. The number of bogies of A increased from 12 to 16. How much more time would they now require to cross each other?
1). 40 second
2). 72 second
3). 60 second
4). 20 second