Example 10: Finding a missing value
Last Updated On: Fri Aug 28 2026| Day | Sales |
|---|---|
| Monday | 1200 |
| Tuesday | 1500 |
| Wednesday | Unknown |
| Thursday | 1700 |
| Friday | 1600 |
| Five-day total | 7500 |
Question
What were Wednesday's sales?
Solution
- Add the known sales: 1,200 + 1,500 + 1,700 + 1,600 = 6,000 dollars.
- Subtract this from the five-day total: 7,500 - 6,000 = 1,500 dollars.
- Wednesday's sales were $1,500.
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