Data Interpretation and Data Sufficiency - 20 Questions in 20 Minutes!

This is literally the make it or break it topic in any competitive exam. Some questions for testing your preparation level!

Good luck and remember to time yourself!

Set 1

A colony has 2800 members, out of which 650 members read only English newspaper, 550 members read only Hindi newspaper and 450 members read only Marathi newspaper.
The number of members reading all three newspapers is 100. Members reading Hindi as well as English newspaper are 200. 400 members read Hindi as well as Marathi Newspaper and 300 members read English as well as Marathi newspaper.

(a) Find the difference between number of members reading English as well as Marathi newspapers and the number of members reading English as well as Hindi newspaper.

(b) How many members read at least 2 newspapers?

(c) Find the number if members reading Hindi newspaper.

(d) How many members read only one newspaper?

Ans: (a)100  (b)1000  (c)1050  (d)1650

Set 2

A school consists of 2800 students. The ratio of boys to girls is 5:9 respectively. All the students are enrolled in hobby classes, namely, dancing, singing and painting. 12% of the boys learn only singing. 16% of the girls learn only dancing. The number of students enrolled only in painting is 925. One-fourth of the boys are enrolled in all the three classes. Number of girls enrolled only in singing is 250% of the boys enrolled in the same. The remaining girls are enrolled in all the three classes. 23% of the boys are enrolled only in dancing and the remaining are enrolled in only painting.

(a) What is the respective ratio of the number of boys enrolled only in Dancing to the number of girls enrolled in the same?

(b) What is the number of girls enrolled in all the three classes?

(c) Number of boys enrolled in painting only is what per cent of the girls enrolled in the same?

(d) How many boys are enrolled in dancing?

Ans. (a)115:144  (b)1212  (c)76.19  (d)480

Set 3

Kareena decided to spend 45% of her salary on shopping. On completion of her shopping she realized that she had spent only Rs. 11,475, which was 60% of what she had decided to spend. How much is Kareena’s salary?

Ans.: Rs. 42500/-

Set 4

In a class of 84 students the boys and girls are in the ratio 5:7, respectively. Among the girls, 7 can speak Hindi and English. 50% of the total students can only speak Hindi. The ratio between the students who speak only Hindi and only English is 21:16 respectively. The ratio between the numbers of boys and girls speaking English 3:5.

(a) What is the number of boys who speak both the languages?

(b) What is the number of girls who only speak English?

(c) What is the ratio between the number of boys and girls respectively who speak Hindi only?

(d) How many girls can speak Hindi?

(e) What is the ratio between the number of boys and girls respectively who speak English?


Ans.: (a)3  (b)20  (c)10:11  (d)22  (e)3:5

Set 5

In an institute employing managers, observers and assistants, what is the monthly salary of an assistant?

  I. Each observer gets Rs. 12,000 per month more than an assistant.

 II. An observer and an assistant together get Rs. 32,000 per month.

III. The total salary per month of a manager and an observer is Rs. 57,000

Which option is sufficient to answer the question?

Ans.: Options I and II both needed to sufficiently answer the question.

Set 6

What is the circumference of semi-circle in cm?

  I. The area of semi-circle is half of the areas of parallelogram.

 II. The length of parallelogram is 1.5 times the radius of the semi circle.

III. The difference between the length and breadth of parallelogram is 8 cm.

Which option is sufficient to answer the question?

Ans.: None of the options can, not even all the three together can answer the question.

Set 7

Out the total number of commuters commuting daily in a city, 17171 commuters commute only by trains daily. 7359 commuters commute only by bikes and 22077 commuters commute only by bus. 14718 commuters commute only by cars. 4906 commute only by autos. 7359 commuters commute only taxies. 26983 commuters commute by autos as well as train daily. 12265 commuters commute by bus as well as autos daily.

(a) The total number of commuters commuting by trains forms what percent of the total number of commuters commuting daily?

(b) The total number of commuters commuting by bikes and taxies together forms what percent of the total number of commuters commuting daily?

(c) The total number of commuters commuting by autos forms what percent of the total number of commuters commuting daily?

(d) The total number of commuters commuting by autos forms what percent of the total number of commuters commuting daily?


Ans.: (a)44%  (b)12%  (c)22%  (d)18%


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