Note 1

Take Note:

Take a note while surfing.





Note With Ink

Give your Note a Colorful Tag.




Easy to Access

Stay on same information and in Sync wherever you are.

Note 2

Take Note:

Organize your information,It may take Shape.





Think With Ink

Differ your Content by Color.




Easy to Access

Easy to pull up your content from anywhere anytime.

Note 3

Take Note:

Don't Let information to miss,Because it take shape





Note With Ink

Simple an Easy Way to take a note.




Easy to Access

Get the same in next visit.


Please wait...

  Take Quiz (Monsoon) Beta Version !!
  Do You have Qs. in your Mind ??? Ask it as Qs. or MCQs or create it as polling Live Now !!

Arithmetic Aptitude :: Boats and Streams

Home > Arithmetic Aptitude > Boats and Streams > General Questions

1 / 38

 A man swims downstream 72 km and upstream 45 km taking 9 hours each time. what is the speed of the current?

Answer: Option B

Explanation:

Man's downstream speed = 72/ 9 kmph => 8kmph
Man's up stream speed = 45/ 9 => 5 kmph

So speed of current = (8 - 5)/2 = 1.5 kmph

Workspace


Tags:  Global Edge

2 / 38

 A boat can row upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is?

Answer: Option A

Explanation:

man's upstream speed = 25 kmph
Man's downstream speed = 35 kmph
so Speed of current = (35 - 25)/2 = 5 kmph

Workspace


Tags:  Global Edge

3 / 38

 The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr the distance travelled downstream in 12 minutes is :

Answer: Option C

Explanation:

Speed downstream = (15 + 3) kmph = 18 kmph.
Distance travelled = [18 * 12/60] km = 3.6 km.

Workspace


Tags:  Global Edge

4 / 38

 A man can row his boat with the stream at 6 km/h and against the stream in 4 km/h. The man's rate is?

Answer: Option A

Explanation:

Man's row in downstream by speed = 6 kmph
and upstream by speed = 4 kmph
so man rate = (6 - 4)/2 = 1 kmph

Workspace


Tags:  Global Edge

5 / 38

 A man can row upstream at 8kmph and downstream at 13 kmph. The speed of the stream is

Answer: Option A

Explanation:

Speed of stream = 1/2(13 -8) kmph = 2.5 kmph.

Workspace


Tags:  Global Edge

6 / 38

 A man can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is?

Answer: Option D

Explanation:

Swim in still water by speed = 4.5 kmph
Let's assume speed in still water = x kmph
speed in downstream =(4.5 + x) kmph
speed in upstream = (4.5 + x) kmph
Given (4.5 + x) = (4.5 - x)2
4.5 + x = 9 -2x
3x = 4.5
x = 1.5 kmph

Workspace


Tags:  No Tags on this question yet!

7 / 38

 A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it takes him 1 hour to row to a plce and come back, how far is the place?

Answer: Option B

Explanation:

Speed downstream = (5+1) kmph = 6 kmph; Speed upstream = (5 - 1)kmph = 4 kmph. Let the required distance be x km.
Then, x/6 + x/4 = 1 ? 2x + 3x = 12 ? 5x = 12 ? x = 2.4 km.

Workspace


Tags:  No Tags on this question yet!

8 / 38

 A man's speed with the current is 15 km / hr and the speed of the current is 2.5 km / hr. The man's speed against the current is

Answer: Option C

Explanation:

Man's rate in still in water = (15 - 2.5) km / hr = 12.5 km / hr.
Man's rate against the current = (12.5 - 2.5) km / hr = 10 km / hr.

Workspace


Tags:  No Tags on this question yet!

9 / 38

 A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is?

Answer: Option C

Explanation:

speed in still water = 15 kmph
stream speed = 5 kmph
so Downstream speed = (15 + 5) kmph = 20 kmph

Workspace


Tags:  No Tags on this question yet!

10 / 38

 A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?

Answer: Option B

Explanation:

Man's downstream speed = 30/3 kmph = 10 kmph

Man's upstream speed = 18/3 kmph = 6 kmph

Speed of man in still water = (10 + 6)/2 = 8 kmph

Workspace


Tags:  No Tags on this question yet!