West's quarterly average — Tables & Charts Aptitude Question
West's quarterly average: | Region | Q1 | Q2 | Q3 | Q4 | |--------|-----|-----|-----|-----| | North | 120 | 140 |… Answer and worked solution on CodeKairo.
- Topic: Tables & Charts
- Section: Data Interpretation
- Difficulty: Easy
- Time target: 60 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 |
What was West's average quarterly sales?
Options
- ₹155 lakh
- ₹160 lakh
- ₹165 lakh
- ₹170 lakh
Show the answer and the worked solution
Correct answer: C. ₹165 lakh
Worked solution
- Total = 150 + 170 + 150 + 190 = 660.
- Average = 660 ÷ 4 = ₹165 lakh.
Answer: ₹165 lakh.
The idea
Sum the row and divide by the number of periods. Pairing figures that add neatly speeds the arithmetic.
Shortcut. Use 150 as a base: the excesses are 0, 20, 0 and 40, averaging 15, so the mean is 165.
Common trap. "₹170 lakh" — averaging only the lowest and highest quarters, (150 + 190) ÷ 2, instead of all four.