31.
|
A man rows downstream 32 km and 14 km upstream. If
he takes 6 hours to cover each distance, then the velocity (in kmph) of the
current is:
|
|
·
A. 1.5 kmph
·
B. 1.75 kmph
·
C. 2 kmph
·
D. 3 kmph
|
32.A
boatman can row 48 km downstream in 4 hr. If the speed of the current is 5
km/hr, then find in what time will be able to cover 8 km upstream?
[A]
6 hr
[C]
8 hr
[B]
4 hr
[D]
None of these
|
|
| 33.
If a boat goes 7 km upstream in 42 minutes and the speed of the stream is 3
kmph, then the speed of the boat in still water is : . [C.B.I. 1993] |
4.2
km/hr 13 km/hr
9
km/hr 21 km/hr
34.
A boat goes 13 km upstream in 39 minutes. The speed of stream is 3 km/hr. The
speed of boat in still water is:
[A]
23 km/hr
[C]
25 km/hr
[B]
27 km/hr
[D]
None of these
|
35.
|
A man takes twice as long to row a distance
against the stream as to row the same distance in favour of the stream. The
ratio of the speed of the boat(in still water) and the stream is:
|
|
·
A. 1:2
·
B. 1:3
·
C. 2:1
·
D. 3:1
|
36.The
speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream
and 14 km upstream in the same time, the speed of the stream is:
[A]
2 km/hr
[C]
3 km/hr
[B]
2.5 km/hr
[D]
4 km/hr
|
37.
|
A
boatman goes 2 km against the current of the stream in 1 hour and goes 1 km
along the current in 10 minutes. How long will it take to go 5 km in
stationary water?
|
|
|
|
·
A. 30
minutes
·
B. 45
minutes
·
C. 1
hour
·
D. 1
hour 15 min
|
|
|
38.
|
A
boatman goes 2 km against the current of the stream in 1 hour and goes 1 km
along the current in 10 minutes. How long will it take to go 5 km in
stationary water?
|
|
|
|
A. 40 minutes
|
B. 1 hour
|
|
|
|
|
C.
1 hour 15 min
|
D. 1 hour 30
min
|
|
|
|
|
View Answer and Explanation:
39.In
one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream.
The speed of the boat in still water (in km/hr) is:
A. 3 km/hr B. 5 km/hr
C. 8 km/hr D. 9 km/hr
40.
Speed of a boat in standing water is 10 kmph and the speed of the stream is 2
kmph. A man rows to a place at a distance of 120 km and comes back to the
starting point. The total time taken by him is:
[A]
20
[C]
25
[B]
24
[D]
50
