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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) ofoat in still water?
A
6.5
B
7.75
C
9
D
10.5
Correct Answer:
9
A man can cross a downstream river by steamer in 40 minutes and same by boat in 1 hour. If the time of crossing Upstream by streamer is 50% more than downstream time by steamer and the time required by boat to cross same river by boat in upstream is 50% more than time required by in downstream. What is the time taken for the man to cross the river downstream by steamer and then return to same place by boat half the way and by steamer the rest of the way?
A
85 minutes
B
115 minutes
C
120 minutes
D
125 minutes
E
None of these
Two boats go downstream from point X to Y. The faster boat covers the distance from X to Y, 1.5 times as fast as slower boat. It is known that for every hour slower boat lags behinds the faster boat by 8 km. however, if they go upstream, then the faster boat covers the distance from Y to X in half the time as the slower boat. Find the speed of the faster boat in still water?
A
12 kmph
B
20 kmph
C
24 kmph
D
25 kmph
E
None of these
A boat goes 8 km upstream and 12 km downstream in 7hours. It goes 9 km upstream and 18 km downstream in 9 hours. What is the speed (in km/h) of the boat in still water?
A
5
B
4
C
2
D
3
Equal distance is covered by a boat inupstream and in downstream in total 5hours. Sum of speed of a boat inupstream and downstream is 40 km/hr.Speed of boat in still water is 600%
more than the speed of stream. Find theapproximate distance covered by boat indownstream (in km).
A
45
B
50
C
55
D
60
A boat goes 15 km upstream and 10 1/2 km down stream in 3 hrs 15 min. It goes 12 km upstream and 14 km downstream in 3 hrs. What is the speed of the boat in still water?
A
4
B
6
C
10
D
14
The ratio of the speed of boat in still water to the speed of stream is 16 :5. A boat goes 16.5 km in 45 minute upstream. Find the time taken by boat to cover the distance of 175 km downstream.
A
30minutes
B
25minutes
C
50minutes
D
45minutes
The ratio of the speed of boat in still water to the speed of stream is 16: 5. A boat goes 16.5 km in 45 minute upstream . Find the time taken by boat to cover the distance of 17.5 km downstream .
A
30 minutes
B
25 minutes
C
50 minutes
D
45 minutes
The ratio of the speed of boat in still water to the speed of stream is 16 : 5. A boat goes 16.5 km in 45 minute upstream , find the time taken by boat to cover the distance of 17.5 km downstream .
A
30 minutes
B
25minutes
C
50 minutes
D
45 minutes
The speed of a boat upstream is 12 kmph. Find the speed of the stream if the speed of the boat downstream is 40% more than the speed of boat upstream.
A
6 kmph
B
4.8 kmph
C
2.4 kmph
D
1.2 kmph
A boat covers a distance of 14 km upstream and 16 km downstream in 9 hours. It covers a distance of 12 km upstream and 40 km downstream in 11hours. What is the speed (in km/hr) of the boat in still water?
A
\5
B
\2
C
\3
D
4