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A worker noticed that the hour hand on the factory clock had moved by 225 degrees during her stay at the factory. For how long did she stay in the factory?
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- 8.5 hours
- 3.75 hours
- 4 hours and 15 minutes
- 7.5 hours
Correct Option: D
Since, we know that 360° = 12 hours
| ∴ 10 = | hours | 360 |
| ∴ 225° = | hours | 360 |
= 7.5 hours
