Growth in the East — Tables & Charts Aptitude Question
Growth in the East: | Region | Q1 | Q2 | Q3 | Q4 | |--------|-----|-----|-----|-----| | North | 120 | 140 | 160 |… Answer and worked solution on CodeKairo.
- Topic: Tables & Charts
- Section: Data Interpretation
- Difficulty: Medium
- Time target: 75 seconds
Question
| Region | Q1 | Q2 | Q3 | Q4 |
|---|---|---|---|---|
| North | 120 | 140 | 160 | 180 |
| South | 200 | 160 | 180 | 220 |
| East | 90 | 110 | 130 | 170 |
| West | 150 | 170 | 150 | 190 |
By what percentage did East's sales grow from Q1 to Q4?
Options
- 77.8%
- 80%
- 88.9%
- 94.4%
Show the answer and the worked solution
Correct answer: C. 88.9%
Worked solution
- Increase = 170 − 90 = 80.
- Percentage = 80/90 × 100 = 88.9%.
Answer: 88.9%.
The idea
Divide by the starting value, not the final one. Dividing by 170 would give 47%, which is a different question.
Shortcut. The rise of 80 on a base of 90 is 8/9, and 1/9 ≈ 11.1%, so 8/9 ≈ 100 − 11.1 = 88.9%.
Common trap. 80% — taking the rise of 80 lakh itself as the percentage, as if the base were 100 rather than 90.