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The census officers provided the data regarding changes in population of three major towns for three years. Population of town A was 180600 in the third year and it increased 5% and 7.5% in second and third year respectively. Population of town B increased by 25% in second year and in the second year it was equal to 150% of the population of town A in first year. After taking population control measures, town B succeeds in controlling population as growth rate in third year was half of that of previous year. The area of town C is 1250 km2 and population density for second year was 250. Growth rate for town C was 11.11% and 10% for second and third year respectively.
 
Note: Population density is calculated as Total population ÷ Total area.
1
Population of town B in third year exceed by how much compare to population of town A in second year?
» Explain it
C
Let the Population of Town A in first year be 100.

Thus, population of town A in third year = 105% of 107.50% of 100 = 112.875 i.e. 180600.

∴ Population of Town A in first year

180600 × 100  = 160000
112.875

Thus, population of town A in second year = 105% of 160000 = 168000

Population of town B in second year = 150% of 160000 = 240000

As given, growth rate of population for town B in the second year was 25%, thus population in first year
240000 × 100  = 192000
125

As growth year became half of previous years' growth rate, Population of town B in third year = 240000 + [240000 × 12.50% (half of 25%)] = 240000 + 30000 = 270000

For town C, population in second year = Population density × Area = 250 × 1250 = 312500

As growth rate for town C was 11.11% and 10% for second and third year respectively, population of C in first year
312500 × 100  = 281250
111.11

Population of C in third year = 110% of 312500 = 343750.

Thus, we can present above data in tabular form as follows:
 
Towns Population
First Year Second Year Third Year
A 160000 168000 180600
B 192000 240000 270000
C 281250 312500 343750

Required difference = Population of town B in third year – Population of town A in second year
 
= 270000 – 168000 = 102000
 
Hence, option C is correct.
 
2
The average population of town B for three years forms what percentage of average population of town C for three years?
» Explain it
B
Average population of town B

192000 + 240000 + 270000  =  702000  = 234000
3 3

Average population of town C
281250 + 312500 + 343750  =  937500  = 312500
3 3

∴ Reqd. % =  234000 × 100 = 74.88%
312500

Hence, option B is correct.
 
3
For town B, male to female ratio for the last two years was 7 : 5 and literate male and illiterate male are in the ratio of 4 : 1 for same years. Find the ratio between illiterate male in second year and literate male in third year.
» Explain it
D
Number of male in town B for Second year

7 × 240000  = 140000
12

Number of male in town B for third year
7 × 270000  = 157500
12

Number of illiterate male in second year
1 × 140000  = 28000
5

Number of literate male in third year
4 × 157500  = 126000
5

Thus, required ratio = 28000 : 126000 i.e. 2 : 9

Hence, option D is correct.
 
4
Refer the data provided in previous question, by what percentage the number of illiterate male in third year for town B less than female in third year for town B?
» Explain it
A
Number of illiterate male in third year for town B

1 × 157500  = 31500
5

Number of female in third year for town B
5 × 270000  = 112500
12

∴ Reqd. % =  112500 – 31500  × 100 = 72%
112500

Hence, option A is correct.
 
5
For the third year, if 3/8th part of population of A town are not above 20 years old, 33% of population of B town are below 20 years old and 70% of population of C town are above 20 years old, how much population of three towns are above 20 years for third year?
» Explain it
D
Population above 20 years in town A

= 180600 –  180600 × 3  = 112875
8
Population above 20 years in town B = (100 – 33)% of 270000 = 180900

Population above 20 years in town C = 70% of 343750 = 240625

Thus, required total = 112875 + 180900 + 240625 = 534400

Hence, option D is correct.
 

Data Interpretation is an important part in all bank exams. Here we at Smartkeeda.com we will learn a New Pattern Based DI, Which is Called Casele DI, These days Caselet DI freequenty asked in all major Bank exams IBPS PO Pre, IBPS Clerk. It has alot chance to appear in IBPS PO 2018 and IBPS Clerk 2018.

We provide you data interpretation quiz with answers and explanation.

Aspirants preparing for IBPS PO exams for the year 2018 can practice these questions. Let us now understand, what exactly is a Caselet DI. Data interpretation normally consists of questions involving pie charts, bar graphs, line graphs, radar graphs pr table with the required information for solving the questions. In a paragraph type data interpretation question, a set of information is provided in a paragraph form. It doesn’t consist of any charts or tables. You have to read the given information carefully and draw a suitable table/chart listing out all the given data to answer the questions.

So, First of all, whenever exams authorities comes up with new kind of questions, students raises one query, "How to Solve New Pattern Based Caselet Data Interpretation". So first we discuss
How to solve caselets/paragraph/Info Chart data interpretation questions?

Given Below steps will help you all while solving questions of Caselet or paragraph based Data Interpretation questions in IBPS PO, IBPS Clerk Exams. Data Interpretation for IBPS PO Pre, IBPS Clerk 2018 with PDF.

I. While Solving caselet involves a thorough understanding of the subject matter of the passage given. Read the paragraph with utmost care and analyze what the question demands. Basically be clear on what is given and what is asked.

II. Try to underline all the important points in a caselet while reading it. You can always use symbols in place of names of persons, places etc to make your work a lot easier. Focus only on useful data and don’t do unnecessary approximations just to simplify the task.

III. With all the important information in your hand, try to represent the data in graphical or tabular form. Represent the data in a pie chart, bar graph, table etc depending upon the feasibility and the motive of the question.

IV. Read the figures closely. You can use options and approximations to avoid tedious and lengthy calculations. If the question asks for relative values, there is no need for find the accurate values. Use approximation but never over-approximate.

Sks Here are the some points you need to remember:

I. Improve your calculation speed: Caselets being calculation intensive, you have to be good with your calculations. Learn speed math techniques and practice them regularly. The more you practice the faster you become in calculations. After a considerable amount of practice, you can do the calculations in your mind. This is going to save a lot of your precious time in exam conditions. So build a intuitive number sense.
 
II. Be thorough with the arithmetic related topics like percentages, interests, ratios and proportions as caselets are often based on these type of concepts. Otherwise you will face a lot off difficulty tackling these questions. Get the basics; understand the difference between growth and growth rate, average growth rate, cumulative average growth rate, market share by volume and market share revenue etc.

III. Practice makes a man perfect. The more you practice these types of questions, the easier the questions will become. Practice questions will improve your speed and accuracy. While attempting these type of questions in exam, always try to choose the questions which will give you the answer with lesser effort, or you will end up spending a significant amount of time on lengthy calculations.
Caselet DI is frequently being asked these days and so we must practice this in the form of quizzes as Smartkeeda Caselt Data Interpretation Quiz for Free of Cost. So, Caselet DI is not new or not even out of way. It is just a mathematical form of English Passage. In Caselet DI, a long paragraph is given and on the basis of that. Candidates can download data interpretation quiz with solutions for banking and other competitive examination.

In the above paragraph of Caselet DI, lots of information is given. You have to read the paragraph carefully and then you have to note down all the key information as short as possible. The given information will let you draw some diagrams such as Venn diagram, tabular chart or any other diagram.

The difference between simple DI and Caselet DI is - In simple DI, information is already given in diagrammatical forms but in Caselet DI, you have to draw a diagram on the basis of given information

Before start solving Caselet DI, you must have knowledge of the following 7 key things:

1. How to draw a diagram on the basis of given information.

2. Which diagram is the need of the question?

3. Knowledge of Venn diagram.

4. Knowledge of the relationship between fractions and their percentage forms.

5. Knowledge of simplification and approximation.

6. If the question belongs to CI & SI or Profit & Loss or Speed, time and distance then you must have knowledge of basic formulae of these topics.

7. Must have knowledge of Ratio and Proportion.

So, in the above information chart or Caselet Chart or Passage Chart you will see all the rules are following properly. While attempting Caselet DI you can even save your time in exam only one condition if you do practice a lot which trough you can create Image or differentiate the data and After that you can answer easily.'

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