If a boat goes 100 km downstream in 10 hours and 75 km upstream in 15 hours, then the speed of the stream is
1). 2 km/hour
2). 2.5 km/hour
3). 3 km/hour
4). 3.5 km/hour
A boat travels 24 km upstream in 6 hours and 20 km downstream in 4 hours. Then the speed of boat in still water and the speed of water current are respectively
1). 4 kmph and 3 kmph
2). 4.5 kmph and 0.5 kmph
3). 4 kmph and 2 kmph
4). 5 kmph and 2 kmph
A man rows 40 km upstream in 8 hours and a distancec of 36 km downstream in 6 hours. Then speed of stream is
1). 0.5 km/hr
2). 1.5 km/hr
3). 1 km/hr
4). 3 km/hr
The speed oi a boat in still water is 10 km/ hr. It covers (upstream) a distance of 45 km in 6 hours. The speed (in km/hr) of the stream is
1). 2.5
2). 3
3). 3.5
4). 4s
A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downsteam in $6\frac{1}{2}$ hours. The speed of the current is
1). 1 km/hr
2). 2 km/hr
3). 1.5 km/hr
4). 2.5 km/hr