Marks-wise distribution of studentsMarks (Out of 100) Cumulative precentage of the total number of students who appeared in Hindi and Punjabi Cumulative number of students who appeared in Hindi 80 and above 15% 108 70 and above 35% 264 60 and above 65% 424 50 and above 90% 554 40 and above 100% 624
Note:
(1) Total number of students who attended the exam is 1200.
(2) No student failed in the examination.
(3) Each student appeared in only one exam, that is, either in Hindi or in Punjabi exam.
The question asks for the sum of two values: the number of students who scored between 70 and 79 marks (inclusive of 70, exclusive of 80) in the Hindi exam, and the number of students who scored 80 or more marks in the Punjabi exam.
Calculating Hindi Students Scoring 70-79 Marks
We need to find the number of Hindi students who scored in the range [70, 79].
- From the table, the cumulative number of students who appeared in Hindi and scored 70 or above is 264.
- The cumulative number of students who appeared in Hindi and scored 80 or above is 108.
- The number of students scoring between 70 and 79 marks (i.e., >= 70 and < 80) in Hindi is the difference between these two cumulative numbers.
Calculation:
Number of Hindi students (70-79 marks) = (Cumulative Hindi students scoring 70+) - (Cumulative Hindi students scoring 80+)
Number of Hindi students (70-79 marks) = 264 - 108 = 156
Calculating Punjabi Students Scoring 80 or More Marks
We need to find the number of Punjabi students who scored 80 or more marks.
- The table provides the 'Cumulative percentage of the total number of students who appeared in Hindi and Punjabi' scoring 80 and above, which is 15%.
- The total number of students who attended the exam is given as 1200.
- Therefore, the total number of students (Hindi + Punjabi) scoring 80 and above is 15% of 1200.
- The number of Hindi students scoring 80 and above is given as 108.
- Since each student appeared in only one exam (Hindi or Punjabi), the number of Punjabi students scoring 80 and above can be found by subtracting the Hindi students scoring 80+ from the total students scoring 80+.
Calculations:
Total students (80+ marks) = 15% of 1200
Total students (80+ marks) = $\\frac{15}{100} \\times 1200 = 15 \\times 12 = 180$
Number of Punjabi students (80+ marks) = (Total students scoring 80+ marks) - (Hindi students scoring 80+ marks)
Number of Punjabi students (80+ marks) = 180 - 108 = 72
Calculating the Total Sum
The question asks for the sum of:
- Number of Hindi students scoring 70-79 marks = 156
- Number of Punjabi students scoring 80+ marks = 72
Total Sum = 156 + 72 = 228
The sum of the number of students who scored 70 or more than 70 but less than 80 marks in Hindi and the number of students who scored 80 or more than 80 marks in Punjabi is 228.
Important Questions from Tabulation
The table shows District-wise data of a number of primary school teachers posted in schools of a city.
Study the table and answer the question:
District
Male teachers
Female teachers
East
1650
2375
North
1075
2651
West
1280
1520
South
1170
1085
Central
690
859
What is the difference between the total number of male teachers in the districts East, North, West taken together and the total number of female teachers in the districts East and South?Table shows income (in Rs. ) received by 4 employees of a company during the month of December 2020 and all their income sources.
Source
Amit
Suresh
Nitin
Varun
Salary
35000
38500
29000
42000
Arrears
6000
6300
5000
7500
Bonus
1000
1100
1000
1240
Overtime
1800
1950
1400
1500
What is the ratio of salary of Varun to his income other than salary?Study the table and answer the question:
Income (Rs.)
No. of persons
Less than 200
12
Less than 250
26
Less than 300
34
Less than 350
40
Less than 400
50
What is the percentage of persons earning Rs. 250 or more?The following table shows the annual profit of a company (in Rs. lakh).
2014-2015
2015-2016
2016-0217
2017-2018
2018-2019
625
690
725
775
815
The period which has the maximum percentage increase in profit over the previous year is:
The table given below shows the number of persons participating in a survey from 6 different states.
States Persons S1 100 S2 200 S3 400 S4 500 S5 600 S6 800 What is the ratio of number of person participating in a survey from state S3 to the number of person participating in a survey from state S4?
