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A Boat takes total 16 hours for traveling downstream from point A to point B and coming back point C which is somewhere between A and B. If the speed of the Boat in Still water is 9 Km/hr and rate of stream is 6 Km/hr, then what is the distance between A and C?
- a)30 Km
- b)60 Km
- c)90 Km
- d)100 Km
- e)Cannot be determined
Correct answer is option 'E'. Can you explain this answer?
A Boat takes total 16 hours for traveling downstream from point A to point B and coming back point C which is somewhere between A and B. If the speed of the Boat in Still water is 9 Km/hr and rate of stream is 6 Km/hr, then what is the distance between A and C?
a)
30 Km
b)
60 Km
c)
90 Km
d)
100 Km
e)
Cannot be determined
|
KS Coaching Center answered |
16 = D/9+6 + x/9-6
A Ship of Length 300m traveling from point A to B downstream passes a Ghat along the river in 18 sec, while in return it passes the same Ghat in 24 sec. If the rate of current is 9 Km/hr. Then what is the length of the Ghat?- a)50 m
- b)60 m
- c)80 m
- d)100 m
- e)Cannot be determined
Correct answer is option 'B'. Can you explain this answer?
A Ship of Length 300m traveling from point A to B downstream passes a Ghat along the river in 18 sec, while in return it passes the same Ghat in 24 sec. If the rate of current is 9 Km/hr. Then what is the length of the Ghat?
a)
50 m
b)
60 m
c)
80 m
d)
100 m
e)
Cannot be determined
|
|
KS Coaching Center answered |
Answer – 2. 60 m Explanation : (S+9)*18 = (S-9)*24
S =63
300+x = 72*5/18*18 x =60
S =63
300+x = 72*5/18*18 x =60
A Boat covers upstream in 12 Hours 48 minutes to travel distance from Point A to B, while it takes 6 hours to cover 3/4th of the same distance running downstream. The speed of the current is 15 Km/hr. The boat covered both forward distance from A to B and backward distance from B to A. Then what is the distance between A and B?- a)360 Km
- b)480 Km
- c)540 Km
- d)640 Km
- e)Cannot be determined
Correct answer is option 'D'. Can you explain this answer?
A Boat covers upstream in 12 Hours 48 minutes to travel distance from Point A to B, while it takes 6 hours to cover 3/4th of the same distance running downstream. The speed of the current is 15 Km/hr. The boat covered both forward distance from A to B and backward distance from B to A. Then what is the distance between A and B?
a)
360 Km
b)
480 Km
c)
540 Km
d)
640 Km
e)
Cannot be determined
|
Target Study Academy answered |
Answer – 4. 640 Km Explanation : (S+R)*8 = (S-R)*64/5
S:R = 13:3
R = 15 S = 65
D = (65+15) *8 = 640
S:R = 13:3
R = 15 S = 65
D = (65+15) *8 = 640
A Boat takes total 10 hours for traveling downstream from point A to point B and coming back point C which is somewhere between A and B. The speed of the Boat in Still water is 9 Km/hr and rate of Stream is 3 Km/hr, then what is the distance between A and B if the ratio of distance between A to C and distance between B to C is 2:1?- a)54 Km
- b)66 Km
- c)72 Km
- d)84 Km
- e)Cannot be determined
Correct answer is option 'C'. Can you explain this answer?
A Boat takes total 10 hours for traveling downstream from point A to point B and coming back point C which is somewhere between A and B. The speed of the Boat in Still water is 9 Km/hr and rate of Stream is 3 Km/hr, then what is the distance between A and B if the ratio of distance between A to C and distance between B to C is 2:1?
a)
54 Km
b)
66 Km
c)
72 Km
d)
84 Km
e)
Cannot be determined
|
|
Naman Agrawal answered |
Given ratio of distance = 2:1,
let the distance between A and C =2X km and B To C = X km respectively.
total dis. travelled A to B= 3X km
downstream speed =(9+3)=12 km/hr.
upstream Speed =(9-3)= 6km/hr;
so, time taken to travel from A to B= 3X/12 hrs. similarly between B to C =X/6 hrs.
Total time taken =(3X/12+X/6)= 5X/12 hrs.
equating 5X/12= 10, we get X=24 kms.
so, the distance between A to B= 3X=(3*24)= 72 kms.
op(c)
A Boat takes 128 min less to travel to 48 Km downstream than to travel the same distance upstream. If the speed of the stream is 3 Km/hr. Then Speed of Boat in still water is?- a)6 Km/hr
- b)9 Km/hr
- c)12 Km/hr
- d)15 Km/hr
- e)None
Correct answer is option 'C'. Can you explain this answer?
A Boat takes 128 min less to travel to 48 Km downstream than to travel the same distance upstream. If the speed of the stream is 3 Km/hr. Then Speed of Boat in still water is?
a)
6 Km/hr
b)
9 Km/hr
c)
12 Km/hr
d)
15 Km/hr
e)
None
|
Karan Bajaj answered |
Speed of stream = 3km/hr
Distance = 48km
consider T1=time during downstream
T2=time during upstream
Condition given: T2-T1=128minutes = 128/60 hours
To find : SPEED OF BOAT IN STILL WATER (let's assume u)
Solution :- T2= 48/(u-3)
T1=48/(u+3)
using: T2-T1= 128/60
48/(u-3) - 48/(u+3)= 128/60
After taking LCM we get
288/(u²-9) =128/60
u²-9=(288×60)/128
u²-9= 15×9
u²= 135+9
u²= 144
u=12km/hr
so option C is the correct answer
Distance = 48km
consider T1=time during downstream
T2=time during upstream
Condition given: T2-T1=128minutes = 128/60 hours
To find : SPEED OF BOAT IN STILL WATER (let's assume u)
Solution :- T2= 48/(u-3)
T1=48/(u+3)
using: T2-T1= 128/60
48/(u-3) - 48/(u+3)= 128/60
After taking LCM we get
288/(u²-9) =128/60
u²-9=(288×60)/128
u²-9= 15×9
u²= 135+9
u²= 144
u=12km/hr
so option C is the correct answer
The speed of Boat in Still water is 40 Km/hr and speed of the stream is 20 Km/hr. The distance between Point A and Point B is 480 Km. The boat started traveling downstream from A to B, in the midway, it is powered by an Engine due to which speed of the Boat increased. Now Boat reached Point B and started back to point A with help of the same engine. It took 19 hours for the entire journey. Then with the help of the engine, the speed of the boat increased by how many Km/hr?- a)10 Km/hr
- b)15 Km/hr
- c)20 Km/hr
- d)24 Km/hr
- e)Cannot be determined
Correct answer is option 'C'. Can you explain this answer?
The speed of Boat in Still water is 40 Km/hr and speed of the stream is 20 Km/hr. The distance between Point A and Point B is 480 Km. The boat started traveling downstream from A to B, in the midway, it is powered by an Engine due to which speed of the Boat increased. Now Boat reached Point B and started back to point A with help of the same engine. It took 19 hours for the entire journey. Then with the help of the engine, the speed of the boat increased by how many Km/hr?
a)
10 Km/hr
b)
15 Km/hr
c)
20 Km/hr
d)
24 Km/hr
e)
Cannot be determined
|
Pranav Kulkarni answered |
Answer – 3. 20 Km/hr Explanation : 19 = 240/60 + 240/60+x + 480/20+x x = 20
Speeds of Boat A and B in still water are in the ratio of 3:2 Rate of current is 10 Km/hr. Both Boats started from Point P to point Q downstream at the same time. After Boat B reaching Point Q, in return journey, it is powered by engine due to which the speed of the boat in still water is increased by 70%, while retuned Boat A returned to Point Q as usual. Both the boats returned back to point P at the same time. Then what is the speed of Boat A?- a)20 Km/hr
- b)30 Km/hr
- c)40 Km/hr
- d)50 Km/hr
- e)Cannot be determined
Correct answer is option 'B'. Can you explain this answer?
Speeds of Boat A and B in still water are in the ratio of 3:2 Rate of current is 10 Km/hr. Both Boats started from Point P to point Q downstream at the same time. After Boat B reaching Point Q, in return journey, it is powered by engine due to which the speed of the boat in still water is increased by 70%, while retuned Boat A returned to Point Q as usual. Both the boats returned back to point P at the same time. Then what is the speed of Boat A?
a)
20 Km/hr
b)
30 Km/hr
c)
40 Km/hr
d)
50 Km/hr
e)
Cannot be determined
|
Rajeev Kumar answered |
Answer – 2. 30 Km/hr Explanation : S 1 /S 2 = 3/2
R = 10
then (1/3x+10)+ (1/3x-10) = (1/2x+10) + (1/3.4x-10) x = 10 Speed of boat A =3*10 = 30
R = 10
then (1/3x+10)+ (1/3x-10) = (1/2x+10) + (1/3.4x-10) x = 10 Speed of boat A =3*10 = 30
. A Boat took 8 hours less to travel a distance downstream than to travel the same distance upstream. If the speed of a boat in still water is 9 Km/hr and speed of a stream is 3 Km/hr. In total how much distance traveled by boat?- a)96 Km
- b)144 Km
- c)164 Km
- d)192 Km
- e)216 Km
Correct answer is option 'D'. Can you explain this answer?
. A Boat took 8 hours less to travel a distance downstream than to travel the same distance upstream. If the speed of a boat in still water is 9 Km/hr and speed of a stream is 3 Km/hr. In total how much distance traveled by boat?
a)
96 Km
b)
144 Km
c)
164 Km
d)
192 Km
e)
216 Km
|
Nikita Singh answered |
Answer – 4. 192 Km Explanation : 8 =D(1/6 – 1/12) D =96 Total = 96+96 =192
The speed of a Boat in standing water is 10km/hr. It traveled Down Stream from point A to B in certain time. After reaching B the Boat is powered by Engine then Boat started to return from Point B to A. The time taken for Forward journey and Backward journey are same. Then what is the speed of the stream?- a)2 Km/hr
- b)3 Km/hr
- c)4 Km/hr
- d)5 Km/hr
- e)Cannot be determined
Correct answer is option 'E'. Can you explain this answer?
The speed of a Boat in standing water is 10km/hr. It traveled Down Stream from point A to B in certain time. After reaching B the Boat is powered by Engine then Boat started to return from Point B to A. The time taken for Forward journey and Backward journey are same. Then what is the speed of the stream?
a)
2 Km/hr
b)
3 Km/hr
c)
4 Km/hr
d)
5 Km/hr
e)
Cannot be determined
|
Faizan Khan answered |
Answer – 5. Cannot be determined Explanation : S+R = D/t ; S-R+x = D/t S+R = S-R+x R =x/2
A Boat going upstream takes 8 hours 24 minutes to cover a certain distance, while it takes 5 hours to cover 5/7 of the same distance running downstream.Then what is the ratio of the speed of boat to speed of water current?
- a)6:5
- b)11:5
- c)11:6
- d)11:1
- e)11:10
Correct answer is option 'D'. Can you explain this answer?
A Boat going upstream takes 8 hours 24 minutes to cover a certain distance, while it takes 5 hours to cover 5/7 of the same distance running downstream.Then what is the ratio of the speed of boat to speed of water current?
a)
6:5
b)
11:5
c)
11:6
d)
11:1
e)
11:10
|
|
Shivam Ghoshal answered |
Chapter doubts & questions for Boats and Stream - RBI Assistant Preparation Course 2025 is part of Bank Exams exam preparation. The chapters have been prepared according to the Bank Exams exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Bank Exams 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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