Question : The table given below shows the income and expenditure of five companies.
| Companies | Income | Expenditure |
| A | 55 | 50 |
| B | 50 | 40 |
| C | 35 | 32 |
| D | 40 | 35 |
| E | 60 | 50 |
What is the difference between average income and average expenditure of all the companies?
Option 1: 4.2
Option 2: 6.6
Option 3: 2.6
Option 4: 8.4
Correct Answer: 6.6
Solution :
We know the formula, Average = $\frac{\text{Sum of all values}}{\text{The total of all values}}$
The average income of all the companies = $\frac{55+50+35+40+60}{5}=\frac{240}{5}$
The average expenditure of all the companies = $\frac{50+40+32+35+50}{5}=\frac{207}{5}$
The difference between the average income and average expenditure of all the companies
$=\frac{240}{5}-\frac{207}{5}=\frac{33}{5}=6.6$
Hence, the correct answer is 6.6.
Related Questions
Question : The table given below shows the production of television and fridges by different companies.
| Companies | Television | Fridge |
| A | 60 | 80 |
| B | 50 | 30 |
| C | 40 | 20 |
| D | 30 | 50 |
| E | 70 | 35 |
J1 = The value of average production of fridges by D and E.
J2 = The total production of television and fridges by all companies.
What is the value of (J2 – J1)?
Option 1: 456.2
Option 2: 314.5
Option 3: 465
Option 4: 422.5
Question : The table shows the number of candidates recruited by four companies A, B, C and D over the years.
| Years | A | B | C | D |
| 2018 | 55 | 40 | 25 | 15 |
| 2019 | 60 | 75 | 50 | 25 |
| 2020 | 65 | 30 | 40 | 65 |
| 2021 | 45 | 35 | 70 | 35 |
Find the ratio of the number of candidates recruited by Company B in 2019 to the number of candidates recruited by Company D in 2020.
Option 1: 15 : 13
Option 2: 13 : 12
Option 3: 15 : 11
Option 4: 12 : 11
Question : Directions: Select the missing number from the given responses.
| 92 | 70 | 48 |
| 64 | 53 | 42 |
| 52 | 45 | ? |
Option 1: 36
Option 2: 40
Option 3: 38
Option 4: 42
Question : The table given below shows the number of students in 6 different schools.
| Schools | Students |
| A | 120 |
| B | 60 |
| C | 70 |
| D | 80 |
| E | 30 |
| F | 50 |
The number of students in school A is what percentage of the number of students in school F?
Option 1: 41.66%
Option 2: 200%
Option 3: 240%
Option 4: 120%
Question : The table given below shows the production of tea by two companies A and B in 6 years.
| Companies | A | B |
| Y1 | 60 | 75 |
| Y2 | 80 | 90 |
| Y3 | 70 | 50 |
| Y4 | 50 | 40 |
| Y5 | 45 | 35 |
| Y6 | 55 | 45 |
What is the sum of the average production of tea by B in years Y1 and Y2 and the average production of tea by A in years Y3 and Y4?
Option 1: 136.5
Option 2: 132.5
Option 3: 142.5
Option 4: 149.5
Know More about
Staff Selection Commission Multi Tasking ...
Application | Cutoff | Selection Process | Preparation Tips | Eligibility | Exam Pattern | Admit Card
Get Updates BrochureYour Staff Selection Commission Multi Tasking Staff Exam brochure has been successfully mailed to your registered email id “”.




