Alpha's average revenue — Tables & Charts Aptitude Question
Alpha's average revenue: | Company | 2022 | 2023 | 2024 | 2025 | |---------|------|------|------|------| | Alpha |… Answer and worked solution on CodeKairo.
- Topic: Tables & Charts
- Section: Data Interpretation
- Difficulty: Easy
- Time target: 60 seconds
Question
| Company | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| Alpha | 120 | 150 | 180 | 210 |
| Beta | 200 | 180 | 240 | 300 |
| Gamma | 80 | 120 | 160 | 240 |
| Delta | 160 | 200 | 180 | 250 |
What was Alpha's average annual revenue over the four years?
Options
- ₹150 crore
- ₹160 crore
- ₹165 crore
- ₹180 crore
Show the answer and the worked solution
Correct answer: C. ₹165 crore
Worked solution
- Alpha's total = 120 + 150 + 180 + 210 = 660.
- Average = 660 ÷ 4 = ₹165 crore.
Answer: ₹165 crore.
The idea
Read across the row for one company and down the column for one year. Saying which direction you need before starting avoids the usual slip.
Shortcut. Alpha rises by a steady 30 a year, so its average is the midpoint of the two middle years: (150 + 180) ÷ 2 = 165.
Common trap. ₹150 crore — grabbing a 'middle' value from the row (Alpha's 2023 figure); with four evenly spaced values the mean lies halfway between the second and third.