A boat goes 4 km upstream and 4 km downstream in 1 hour. The same boat goes 5 km downstream and 3 km upstream in 55 minutes. What is the speed (in km/hr) of boat in still water?
1). 6.5
2). 7.75
3). 9
4). 10.5
A boat goes 15 km upstream and $10\frac{1}{2}$ km downstream in 3hours 15 minuts. It goes 12 km upstream and 14 km downstream in 3hours. What is the speed of the boat in still water?
1). 4
2). 6
3). 10
4). 14
The speed of a boat along the stream is 12 km/h and against the stream is 8 km/h.The time taken by the boat to sail 24 km in still water is
1). 2 hours
2). 3 hours
3). 2.4 hours
4). 1.2 hours
Speed of a boat is 5km per hour in still water and the speed of the stream is 3 km per hour. If the boat takes 3 hours to go to a place and come back, the distance of the place is :
1). 3.75 km
2). 4 km
3). 4.8 km
4). 4.25 km
Speed of motorboat in still water is 45kmph. If the motorboat travels 80 km along the stream in 1 hour 20 minutes, then the time taken by it to cover the same distance against the stream will be
1). 3 hours
2). 1 hour 20 minutes
3). 2 hours 40 minutes
4). 2 hours 55 minutes