Data Interpretation (Railway Maths) (Part – I)

Total Questions: 50

21. The following table depicts the number of people in 4 different villages (A, B C and D), and the ratio of literate to illiterate people in those villages. [Level 5 (15/06/2022) Shift 1 ]

What is the percentage of literate people in all the four villages together?

Correct Answer: (d) 70%
Solution:

22. The given chart represents the import of various consumer goods (in Lakh tons) during the years 2016 - 2020. [Level 5 (15/06/2022) Shift 2 ]

What is the ratio of the number of cosmetics imported in years 2016 and 2020 together to that of the toys in the year 2018 and 2020 together?

Correct Answer: (c) 4 : 3
Solution:

23. Study the given graph and answer the question that follows. The graph shows the total cost and sales values(in lakhs) of five products manufactured by a company. [Level 5 (15/06/2022) Shift 3 ]

In which product has the company earned maximum profit?

Correct Answer: (c) Product V
Solution:

Profit in Product V = 78 - 65 = 13
Profit in Product W = 85.5 - 75 = 10.5
Profit in Product X = 69 - 60 = 9
Profit in Product Y = 92 - 80 = 12
Profit in Product Z = 77 - 70 = 7
Product V has maximum profit = 13

24. The loan disbursement at ABC bank in the last 5 years is as shown in the table. [Level 2 (16/06/2022) Shift 1 ]

Which year has the maximum percentage growth in the loan disbursement over the previous year?

Correct Answer: (b) 2018
Solution:

25. The following chart shows the number of telephone conversations at a Call Centre for various call duration on a particular day. [Level 2 (16/06/2022) Shift 2 ]

How many minutes of telephone conversation took place on that day?

Correct Answer: (b) 332
Solution:

Total call conversation (minutes)
= 4 × 1 + 14 × 2 + 40 × 3 + 30 × 4 + 12 × 5
= 4 + 28 + 120 + 120 + 60 = 332

26. The following graph represents the number of students enrolled and the number of students qualified in five colleges during a particular year. [Level 2 (16/06/2022) Shift 3 ]

What is the ratio of enrolled to qualified students across all colleges?

Correct Answer: (d) 6 : 5
Solution:

Total enrolled students = 45 + 52 + 48 + 40 + 55 = 240
Total qualified students = 38 + 40 + 42 + 32 + 48 = 200
Now, Ratio = 240/200 = 6 : 5

27. Given is the data on the ages of the student of the class. What is the mean age of all the students taken together. [Level 3 (17/06/2022) Shift 1 ]

Correct Answer: (a) 7
Solution:

Total sum of the ages of the students = 64 + 48 + 70 + 63 + 35 = 280
Total number of students = 8 + 6 + 10 + 9 + 7 = 40
Average = 280/40 = 7

28. The following pie chart shows the expenditure distribution of a college festival. A represents production expenditure, B represents lights and music system expenses, C represents advertisement expenses and D represents food expenses. Study the pie chart and answer the questions. [Level 3 (17/06/2022) Shift 2 ]

Approximately how much is spent on food and advertisement together if the total expenditure was ₹ 63,070?

Correct Answer: (b) ₹ 25,000
Solution:

29. Of the 360 students who sat for class X Board exams. 10% students scored A grade, 20% students scored B grade, 30% students scored C grade and 40% scored D grade. From the given chart, find the total number of students who scored Grade A and Grade B. [RRB NTPC 28/12/2020 (Evening) ]

Correct Answer: (a) 108
Solution:

30. The following table shows the Air Quality Index (AQI) (PM2.5) for the four weeks of February 2018. What is the difference in the average of AQI in Kolkata and Delhi in the month of February ? [RRB NTPC 28/12/2020 (Evening) ]

Correct Answer: (d) 16
Solution: