Mathematics · Averages
The average delivery time of 8 parcels of a courier service is 42.5 hours. When a new parcel joined them, the average delivery time decreased by 2.5 hours. What is the delivery time of the new parcel?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 162.5 hours
- 220.0 hours✓
- 322.5 hours
- 440.0 hours
Correct answer
20.0 hours
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