Data Interpretation (Railway Maths) (Part – I)

Total Questions: 50

31. The following bar graph shows the number of web series released by a subscription service mobile application in various years from 2014-2018 and the line graph shows the number of web series with a rating of less than 5 stars. [RRB NTPC 29/12/2020 (Morning) ]

Find the approximated total percentage of web series with a rating 5 star and above from 2014 - 2018.

Correct Answer: (a) 74
Solution:

32. From the given diagram, determine the difference between the total number of cars sold in the first three years and in the last three years. [RRB NTPC 30/12/2020 (Morning) ]

Correct Answer: (b) 200
Solution:

The total number of cars sold in the first three years
= (150 + 100 + 250) = 500 and in the last three years
= (100 + 300 + 300) = 700
So, the difference between the total number of cars sold in the first three years and in the last three years
= 700 - 500 = 200.

33. The given chart gives interest rates offered on deposits by two banks A and B for a period of 5 years (1 - 5). What would be the difference in interest amount earned in the third year , if a person had deposited Rs.23 lakhs at the beginning of the year in bank B instead of in bank A? [RRB NTPC 30/12/2020 (Morning) ]

Correct Answer: (c) Rs. 34,500
Solution:

34. Observe the table and answer the question below. The table gives the pass percentage of class X students of five government schools in Delhi on the basis of gender. [RRB NTPC 04/01/2021 (Evening) ]

What is the ratio of pass percentage of boys of school B to that of boys of school C ?

Correct Answer: (a) 3 : 2
Solution:

35. Observe the graph and answer the question below. The graph represents the number of males and female workers in four different companies. [RRB NTPC 04/01/2021 (Evening) ]

Which company has the maximum difference in the number of male and female employees?

Correct Answer: (a) D
Solution:

36. The given pie diagram shows the number of students admitted in different faculties of a college. What part of the total students is admitted in the art faculty ? [RRB NTPC 05/01/2021 (Morning) ]

Correct Answer: (b) 1/3
Solution:

Total number of students admitted in all the faculties
= 1200 + 300 + 450 + 650 + 1000 = 3600 Now, number of students admitted to Arts faculty = 1200 So, the part of the total students admitted in the Arts faculty is = 1200/3600 = 1/3

37. The table given below gives data for wheat production (in lakh tonnes) for 5 states, from the year 2015 to 2019. Study the data given in the table and answer the question below it. [RRB NTPC 09/01/2021 (Evening) ]

From 2015-2019, which state contributed the least to the total production of wheat?

Correct Answer: (a) D
Solution:

From the given table D contributes only 38 lakh tonnes which is least.

38. Study the following pie chart and answer the question given below it. The following pie chart represents the percentage distribution for different sectors. [RRB JE 02/06/2019 (Morning) ]

Find the angle subtended at the centre of the circle by the social services sector.

Correct Answer: (d) 58°
Solution:

39. Study the following pie chart and answer the question given below it. The following pie chart represents the expenditure on various items and savings in a month for a family. [RRB JE 26/06/2019 (Evening) ]

If savings in a month amount to Rs.8000, what is the total expenditure for the month? 

Correct Answer: (b) Rs. 40000
Solution:

40. Study the following pie chart and answer the question given below it. The following pie chart represents the expenditure incurred in publishing a book. [RRB JE 27/06/2019 (Evening) ]

What is the difference in the angles of the sectors showing printing and binding expenditure in the corresponding pie-diagram ?

Correct Answer: (d) 54°
Solution: