# 3 bank combined senior officer written 2018 : AUST

3 bank combined senior officer : 3 bank combined senior officer এর preli question করেছিল AUST.  3 bank combined senior officer এর written question ও স্বাভাবিকভাবেই ওরা করেছিল। এই পোস্টে 3 bank combined senior officer written question এর ম্যাথ ও translation করে দেয়া হল।

3 bank combined senior officer এর preli question ও সল্যুশন দেখুন: Combined 3 Bank Senior Officer Question 2018: AUST

## 3 bank combined senior officer written question 2018 for:

০১. আনসার ভিডিপি উন্নয়ন ব্যাংক
০২. পল্লী সঞ্চয় ব্যাংক
০৩. বাংলাদেশ হাউজ বিল্ডিং ফাইন্যান্স কর্পোরেশন

3 bank combined senior officer পোস্টের নাম: সিনিয়র অফিসার

3 bank combined senior officer পোস্টসংখ্যা: ৩৬৭

## 3 bank combined senior officer written question 2018 Solution

Instruction: Answer the following questions in the blank space provided below each question. Figures at the right hand margin indicates full marks,

01. A train 300m long along overtook a man walking along the line in the same direction at a speed of 4 km/h and passed him in 30 sec. The train reached the station in 15 minutes after it had passed the man. In what time did the man reach the station?

Solution:

Let,

The speed of the train be x km/hr

Since the direction is same,

The relative speed

= (x -4) km/hr

= (x – 4)1000/3600 m/sec

= (5/18)× (x – 4)

ATQ,

300/{(5/18)× (x – 4)} = 30

Or, (300×18)/5(x – 4) = 30

Or, 150(x – 4) = 300 × 18

Or, x-4 = 300 × 18/150

Or, x-4 = 36

Or, x = 40

So, the speed of the train is x = 40 km/hr

After passing the man, the train travels for 15 minutes.

So, distance covered by the train = 40× 15/60 km = 10 km.

Now, the man needs time = 10km/4km/hr = 2 ½ hr to reach the station.

02. Two boats on opposite banks of a river start moving towards each other. They first pass each other 1400 meter from one bank. They each continue to the opposite bank, immediately to around and start back to the other bank. When they pass each other a second time, they are 600 meters from the other bank. We assume that each boat travels at a constant speed all along the journey. Find the width of the river?

Solution:

Let,

width of the river be x meter.

At 1st passing,

Boat 1 moves 1400 meter

So, Boat 2 moves = x – 1400 meter

At 2nd passing,

Boat 1 moves = (x-1400 + 600) meter = x-800 meter

Boat 2 moves = 1400 + (x-600) meter = x + 800 meter

Now,

1400/(x-1400) = (x-800)/(x+800)

Or, x2 – 800x – 1400x + 800×1400 = 1400x + 800×1400

Or, x2 – 3600x = 0

Or, x(x-3600) =0

X = 0 (Not Acceptable)

x-3600 =0

or, x = 3600

03. In a mixture of milk and water, their ratio is 4:5 in the first container. And the same mixture has ratio 5:1 in the second container. In what ratio should the mixture be extracted from such container and poured into the third container, so that the ration of milk and water comes to 5:4 in the third container.

Solution:

Let 1st container contains X liters mixture of milk and water.
Milk in 1st container = 4/9x
Water in 1st container =5/9x
Let 2nd container contains Y liters mixture of milk and water
Milk in 2nd container = 5/6y
Water in 2nd container =1/6y
Let the two mixture combine such that the milk to water ratio is 5:4

So,
(4x/9 + 5y/6) / (5x/9 +y/6) =5/4
or, (8x + 15y)/(10x + 3y) = 5/4

Or, 50x + 15y = 32x + 60y

Or, 18x = 45y

Or, x/y = 45/18

Or, x/y = 5/2
Hence mixture from first container and second container should be mixed in the ratio 5/2 for milk and water to be in ratio 5:4.

04.A can do a piece of work in 120 days and B can do it in 150 days. They work together for 20 days. Then B leaves and A continues the work alone. 12 days after that C joins A and the work is completed in 48 days more. In how many days can do it if he works alone?

Solution:

A’s 1 day’s work =1/120
B’s 1 day’s work = 1/150
(A+B)’s 1 day’s work =(1/120+1/150)=9/600 = 3/200
(A+B)’s 20 day’s work (3/200)×20 =3/10
A’s 12 day’s work (1/120)×12 =1/10

Remaining work = 1- (3/10+1/10)=3/5
(A+C)’s 48 day’s work = 3/5
(A+C)’s 1 day’s work = (3/5)×(1/48)=3/240

C’s 1 day’s work (3/240-1/120)=1/240

S0, C does the work in 240 days.

05. The number of girls in a school is 160 more than 1/3 of the total enrollment of the school. The number of boys is 280 more than 1/7 of the total enrollment in the school. How many pupils in the school are girls and boys?

Solution:

Let,

the total enrollment of students be T,

number of girls G and the boys B.

ATQ,

G = 160 + T/3

B = 280 +T/7

T = G+B = 160 + T/3 + 280 +T/7,

Or, 21T = 3360 + 7T + 5880 + 3T

Or, 11T = 3360+5880 = 9240

Or, T = 9240/11 = 840

So G = 160 + 840/3 = 440 and

B = 280 + 840/7 = 400

06. A manufacturing company uses two machines A and B with different production capacities. When working alone, machine A can produce a production lot in 5 hours and machine B can produce the same lot in x hours. When the two machines operate simultaneously to produce the same production lot, it takes them 2 hours to complete the job. How many hours will the machine B take to produce the production lot alone?

Solution:

A’s 1 hour work = 1/5

B’s 1 hour work = 1/x

So, (A+B)’s 1 hour work = (1/5 + 1/x)

As (A+B) take 2 hours to complete the job, they take 1 hour to do ½ of the job.

So,

1/5 + 1/x = ½

Or, 1/x = ½ – 1/5

Or, 1/x = 3/10

Or, x = 10/3 = 3.33 hrs

07. Translation: English to Bangla

## 3 bank combined senior officer written: Translation

Chikungunya is an infection by the chikungunya Virus.চিকুনগুনিয়া ভাইরাসের দ্বারা চিকুনগুনিয়া রোগের সংক্রমণ হয়।
Symptoms include lever and joint pain.এর উপসর্গগুলোর মধ্যে লিভার এবং গাঁটে গাঁটে ব্যথা অন্তর্ভুক্ত।
These typically occur two to twelve days after exposure.সংক্রমণের সাধারণত দুই থেকে বারো দিনের মধ্যে এটা প্রকাশ পায়।
Other symptoms may include headache, muscle pain, joint swelling, and rash.অন্যান্য উপসর্গগুলির মধ্যে রয়েছে মাথাব্যথা, পেশী ব্যথা, ফুলে উঠা এবং ফুসকুড়ি।
Most people are better within a week, however, Occasionally the joint pain may last for months.বেশিরভাগ মানুষ এক সপ্তাহের মধ্যেই আরোগ্য লাভ করে, তবে, মাঝে মাঝে গাঁটের ব্যথা ব্যথা কয়েক মাস ধরে থাকতে পারে।
The risk of death is around 1 to 1000.এ রোগে মৃত্যুর ঝুঁকি ১ থেকে ১০০০ এর কাছাকাছি।
The virus is spread between people by two types of mosquitoes: Aedes albopictus and aedes aegypti.চিকুনগুনিয়ার ভাইরাস দুই ধরনের মশা দ্বারা মানুষের মাঝে ছড়িয়ে পড়ে: একটা হচ্ছে এডিস আলবফিক্টস এবং অন্যটি এডিস ইজিপ্টি।
They mainly bite during the day.এই মশাগুলো সাধারণত দিনে কামডায়।
The virus may circulate within a number of animals including birds and rodents.পাখি এবং সুচালো দাঁতবিশিষ্ট প্রাণীর মধ্যেও এ ভাইরাস ছড়িয়ে পড়তে পারে।
Diagnosis is by either testing the blood for the virus’s RNA or antibodies to the virus.রক্তে ভাইরাসটির RNA বা অ্যান্টিবডিগুলি পরীক্ষার মাধ্যমে এই রোগ নির্ণয় করা হয়।
The best means of prevention is overall mosquito control and the avoidance of bites in areas where the disease is common.চিকুনগুনিয়া রোগ প্রতিরোধের সর্বোত্তম উপায় হচ্ছে সামগ্রিকভাবে মশার বংশবিস্তার এবং যে সকল এলাকায় রোগটির প্রাবল্য তা নিয়ন্ত্রণ করা।
This may be partly achieved by decreasing mosquitoes’ access to water and with the use of insect repellent and mosquito nets.নিয়ন্ত্রণ কার্য কিছুটা সম্ভব মশাদের জলাবদ্ধ জায়গায় অবস্থানে বাধাদান এবং সেইসাথে কীটপতঙ্গের প্রতিরোধক ও মশারি ব্যবহারের মাধ্যমে।
There is no vaccine and no specific treatment as of 2016.২০১৬ সাল পর্যন্ত এ রোগের কোন টিকা নেই এবং কোনও নির্দিষ্ট চিকিৎসা ছিল না।
Recommendations include rest, fluids and medications to help with fever and joint pain.রোগ নিরাময়ের সুপারিশ হিসেবে জ্বর এবং ব্যথা কমানোর জন্য পর্যাপ্ত বিশ্রাম, তরল গ্রহণ ও ওষুধ সেবন করা যায়।

08. Translation: Bangla to English

## 3 bank combined senior officer written: Translation

বাংলাদেশের তথ্যপ্রযুক্তি খাতে অন্যতম প্রতিশ্রুতিশীল ও সুসংগঠিত প্রতিষ্ঠান হচ্ছে বাংলাদেশ অ্যাসােসিয়েশন অব সফটওয়্যার অ্যান্ড ইনফরমেশন সার্ভিসেস (বেসিস)।Bangladesh Association of Software and Information Services(BASIS) is one of the most committed and well-organized organizations in the IT sector of Bangladesh
দিন দিন আমাদের দেশের ইন্টারনেট ব্যবহারকারী বেড়েই চলেছে।Day by day, the number of internet users of our country are growing.
এই ইন্টারনেট সবাই যাতে ইতিবাচক হিসেবে ব্যবহার করে, সে ক্ষেত্রে বেসিস অসামান্য ভুমিকা পালন করতে পারে।Basis can play an outstanding role in the case for the people to use internet positively.
সম্প্রতি দেশের মুঠোফোন অপারেটরগুলো ফোরজির লাইসেন্স পেয়েছে।Recently, the mobile phone operators of the country have got the license of 4G.
এটা আমাদের দেশের তথ্যপ্রযুক্তির জন্য একটি বড় মাইলফলক হিসেবে বিবেচিত হয়েছে।It has been considered as a major milestone for the information technology of our country.
কারণ, ইন্টারনেটের ধীরগতি এটা ব্যবহার করতে অনেক সমস্যার সৃষ্টি করত।Because the slowness of the speed of internet, it used to create many problems in using.
দেশের সর্বত্র সবার মধ্যে তথ্যপ্রযুক্তির আলো ছড়িয়ে দিতে একটি সুসংগঠিত সংগঠন হিসেবে বেসিসকে আরও বলিষ্ঠ ভূমিকা রাখতে হবে।BASIS, as a well-organized organization, will have to play a robust role to spread the light of information technology across the country.

09. Letter writing in English:

Write an application in response to the following advertisement: Apply for the post of Secretary in a business industry.

10. Letter Writing in Bangla:

সড়ক দুর্ঘটনা রোধের ব্যাপারে আপনার পরামর্শ সংবাদপত্রে প্রকাশের জন্য একটি দৈনিক পত্রিকার সম্পাদকের নিকট পত্র লিখুন।

11. Focus writing in English

Write an essay on “The Role of Commercial Bank in Developing Small and Medium Scale Industries in Bangladesh”.

12. Focus writing in Bangla:

রেমিট্যান্স ও আমাদের সামাজিক জীবন সম্পর্কে একটি প্রবন্ধ রচনা করুন।

13. English Comprehension

Water pollution refers to any change in natural water that may impair further use of water, caused by the introduction of organic or inorganic substances or by a change in the temperature of water. Waste water emanate from the following sources: Municipal waste water, Industrial waste water, Agricultural runoff, Storm water and urban runoff.

During recent years, chemical pollution of water bodies has increased many fold and people who are responsible for human health have become increasingly concerned about water pollution. Eutrophication is the enrichment of water by nutrients from natural or man-made sources, or all the nutrients, nitrogen and phosphorus are most often considered as key nutrients responsible for promotion of growth of algae and other plants resulting in anoxic condition.

Pesticides used in agriculture reach natural or man-made water bodies and cause disruption to one or more physiological functions of aquatic organisms by interfering with the production of necessary biochemical e.g., D.D.T. which consists of aromatic ring, mimic the effects of estrogen in aquatic animals such as fish, where the reproduction is disturbed. As such non-biodegradable pesticides accumulate in the body of aquatic organisms through the process of bio magnification. Along with agricultural runoff many toxic chemicals reach water bodies through industrial effluents.

The structure of a molecule is the key to its biodegradability. In general polymers with mixed backbone linkage (carbon-oxygen or carbon-nitrogen) show greater susceptibility to hydrolysis. than carbon-carbon backbone polymers. Polymers with aromatic components or branched region tend to be more resistant to attack by microorganisms than straight chain aliphatic compounds.

Most common system practiced for control of water pollution is the use of waste water treatment plants, based on the physical, chemical and biological treatment steps generally known as preliminary, primary, secondary and tertiary treatments. It must be remembered that the steps of treatment and type of treatment will depend upon the constituents and their concentrations in the eMoent and final usage of water.

(a) Why did the quality of water deteriorated due to human activities?

(b) Why the protection of human health has become a problem?

(c) Justify the statement “Pesticides are useful and at the same time harmful to the ecosystem”.

(d) What determines biodegradability of a chemical?

(e) How polluted water is treated for safe disposal.

3 bank combined senior officer ছাড়াও ব্যাংক কম্বাইন্ড প্রিলি প্রিপারেশনের জন্য দেখুন:

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এক পোস্টেই বাংলা দেখতে ক্লিক করুন- Bank Bangla Questions Answers for Preli : AUST All

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Updated: May 15, 2019 — 3:19 pm