The following table presents the percentage (%) distribution of production of various models of Laptop (A-F) manufactured by a company over two consecutive years in 2019 and 2020. The total number of Laptops produced in 2019 was 35 lakh and in 2020, 1t was 44 lakhs. Based on the data in the table: answer the questions: Year-wise Percentage Distribution of Production of Laptops Year Laptop Model (in %) A B C D E F 2019 30% 15% 20% 10% 15% 10% 2020 40% 20% 15% 10% 10% 5%
Total number of Laptops of models A. B and E produced in 2019 was:
21.00 lakh
Understanding the Laptop Production Data
The question provides a table showing the percentage distribution of laptop production across different models (A, B, C, D, E, F) for two years, 2019 and 2020. It also gives the total number of laptops produced in each of these years. We are asked to find the total number of laptops of models A, B, and E produced specifically in the year 2019.
| Year | Laptop Model (in %) | |||||
|---|---|---|---|---|---|---|
| A | B | C | D | E | F | |
| 2019 | 30% | 15% | 20% | 10% | 15% | 10% |
| 2020 | 40% | 20% | 15% | 10% | 10% | 5% |
Total laptops produced in 2019: 35 lakh
Total laptops produced in 2020: 44 lakh
Calculating Production for Models A, B, and E in 2019
To find the total number of laptops of models A, B, and E produced in 2019, we first need to find the combined percentage of production for these three models in that year.
From the table, the percentages for 2019 are:
- Model A: 30%
- Model B: 15%
- Model E: 15%
Now, let's sum these percentages to find the total percentage of production for models A, B, and E in 2019:
Total percentage for models A, B, E in 2019 = Percentage of A + Percentage of B + Percentage of E
Total percentage = 30% + 15% + 15% = 60%
Final Calculation of Laptop Quantity
We know the total number of laptops produced in 2019 was 35 lakh. The number of laptops corresponding to models A, B, and E is 60% of this total production.
Number of laptops (A, B, E) in 2019 = Total production in 2019 $\times$ Total percentage for A, B, E
Number of laptops (A, B, E) in 2019 = $35 \text{ lakh} \times 60\%$
Let's convert the percentage to a decimal and perform the calculation:
Number of laptops (A, B, E) in 2019 = $35 \times \frac{60}{100} \text{ lakh}$
Number of laptops (A, B, E) in 2019 = $35 \times 0.60 \text{ lakh}$
Number of laptops (A, B, E) in 2019 = $21.00 \text{ lakh}$
Therefore, the total number of laptops of models A, B, and E produced in 2019 was 21.00 lakh.
Revision Table: Key Data Points
| Metric | Value (2019) |
|---|---|
| Total Production | 35 lakh |
| Percentage of Model A | 30% |
| Percentage of Model B | 15% |
| Percentage of Model E | 15% |
| Combined Percentage (A+B+E) | 60% |
| Calculated Production (A+B+E) | 21.00 lakh |
Additional Information: Data Interpretation Skills
Data interpretation questions, like this one involving laptop production data, require careful reading and understanding of tables and percentages. Key skills include:
- Extracting Relevant Data: Identifying the specific numbers and percentages needed for the calculation (e.g., production in 2019, percentages for models A, B, E).
- Calculating Percentages: Understanding how to sum percentages and apply them to a total value.
- Unit Conversion: Being mindful of units (e.g., lakhs) and ensuring consistency throughout the calculation.
- Attention to Detail: Double-checking which year and which models are specified in the question.
Practicing with various types of data (tables, charts, graphs) helps improve speed and accuracy in data interpretation questions often found in exams.
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?
