## Boats and Streams Example 3

Boats and Streams shortcut tricks

So, before doing anything we recommend you to do a math practice set. After that, find out twenty math problems related to this topic and write those on a paper. Firstly, using basic math formula do first ten maths of that page. And, you also need to keep track of Timing. And, after solving all ten math questions write down total time taken by you to solve those questions. Now, read our examples on boats and streams shortcut tricks and practice few questions. After finishing this do remaining questions using Boats and Streams shortcut tricks. And, again keep track of the time. This time you will surely see improvement in your timing. But, this is not all you want. Moreover, you need more practice to improve your timing more.

### Few Important things to Remember

So, you all know that math portion is very much important in competitive exams. And, it doesn’t mean that other topics are not so important. But, if you need a good score in exam then you have to score good in maths. You can get good score only by practicing more and more. So, all you need to do is to do math problems correctly within time, and this can be achieved only by using shortcut tricks.

But, it doesn’t mean that you can’t do math problems without using any shortcut tricks. You may have that potential that you may do maths within time without using any shortcut tricks. But, so many other people may not do the same. And, for those we prepared this boats and streams shortcut tricks. We try our level best to put together all types of shortcut methods here. But, we may miss few of them. So, if you know anything else rather than this please do share with us. And, your little help will help so many needy.

### Boats and Streams Example 3

So, this is the basic theory of Boat and Stream which is applied in question to obtain answers here Boat and Stream Methods of example in different form of examples.

In maths exam papers there are two or three question are given from this chapter. Therefore, this type of problem are given in Quantitative Aptitude which is a very essential paper in banking exam. So, below are some more Boats and Streams example for your better practice.

### Example #1

The speed of a boat in still water is 18 km/hr and the rate of current is 6 km/hr. So, what distance will the boat covers in downstream in 14 minutes?

- 4.2 km
- 5.6 km
- 6.8 km
- 7.4 km

Show Answer Show How to Solve Open Rough Workspace

**Answer:**Option (B)

**How to Solve**

Speed in downstream,

= (18 + 6)

= 24 km/hr.

Distance passes,

= (24 x 14 / 60)

= 5.6 km.

**Rough Workspace**

### Example #2

Speed of a boat in still water is 12 km/hr and the speed of the stream is 4 km/hr. A boy row to a place, which is 80 km away and then he return back to the place where he started. So, find the total time required to cover the total distance.

- 15 hours
- 17 hours
- 20 hours
- 24 hours

Show Answer Show How to Solve Open Rough Workspace

**Answer:**Option (A)

**How to Solve**

Speed of Upstream,

12 – 4 = 8 km/hr.

Speed of Downstream,

12 + 4 = 16 km/hr.

So, total time taken is,

( 80 / 8 ) + ( 80 / 16 )

= 15 hours.

**Rough Workspace**

### Example #3

A man can row upstream at 10 km/hr and downstream at 18 km/hr. So, what is the speed of the stream?

- 2 km/hr
- 4 km/hr
- 6 km/hr
- 8 km/hr

Show Answer Show How to Solve Open Rough Workspace

**Answer:**Option (B)

**How to Solve**

Speed of the stream is,

1 / 2 (a – b )

= 1 / 2 ( 18 – 10 )

= 4 km/hr.

**Rough Workspace**

### Example #4

A boat can travel with a speed of 14 km/hr in still water. If the speed of the stream is 4 km/hr, then find the time taken to go 72 km downstream.

- 1 hours
- 2 hours
- 4 hours
- 6 hours

Show Answer Show How to Solve Open Rough Workspace

**Answer:**Option (C)

**How to Solve**

Speed of downstream is,

( 14 + 4 )

= 18 km/hr

Time taken to travel 72 km downstream is,

= 72 / 18

= 4 hours.

**Rough Workspace**

### Example #5

If a steam boat goes 8 km upstream in 40 minutes and the speed of stream is 5 km/hr, then in still water what would be the speed of the boat?

- 11 km/hr
- 13 km/hr
- 15 km/hr
- 17 km/hr

Show Answer Show How to Solve Open Rough Workspace

**Answer:**Option (D)

**How to Solve**

Rate of stream is,

= 8 x 60 / 40 [ convert minutes to hour we multiplying by 60 ]

= 12 km/hr.

Speed of stream is 5 km/hr.

Let, speed in still water be X km/hr.

If stream speed 5 km then speed of upstream would be,

= ( X – 5 ) km/hr.

So, X – 5 = 12

X = 12 + 5

X = 17 km/hr.

So, speed of the boat is 17 km/hr.

**Rough Workspace**

### Few examples of Boats and Streams with Shortcut Tricks

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it is nice

Very usefull

thank u..

very useful

SIR FIRST QUESTION ME 60 KAHA SE AAYA HAI MUJHE SAMJH NHI AAYA

mins ko hour me convert krne k liye d=s*t. 8=s*40/60

convert minutes into hours

Nicely described… thank u …

I think u have to increase no. and variety of questions….

It ll b better if u giv more problems as examples

A man can row 7 km/hr in still water. If the river is running at 3km/hr,it takes 6hrs more in upstream then go to downstream for the same distance how far is the place?pls give me the. Solution

10*X=4*(X+6); Hear X is time taken to reach that place in down stream.

X=4hours;

Total one way distance is total speed(person’s+ stream)*time taken.

I.e 10*4=40km.

u won’t complicate it .

take

speed of stillwater (u) =7km\hr

speed of water (v) = 3km\hr

to find : distance of d.s and u.s

downstream(a)=u+v=11km\hr

upstram (b) =u-v=4km\hr.

take diffferece =11-4=7 * 6hrs is answer

thank you

very useful

The speed of a boat in the still water in 10 Kmph. if it can travel 26 Km downstream and 14 km upstream in the same time, the speed of stream is

hi shubham!!!

There is a formula

speed of boat in still water=rate of stream(upstream+downstream/upstream-downstream)

x—- rate of stream

10=x(40/12)

10=x(10/3)

3=x

x=3

speed of the stream is 3

very useful……