Between 10pm to 6am, a fitness band records the following percentage data. How long was the user in Light sleep or in Extremely light sleep?
Sleep State Percentage
Deep Sleep 10%
Dreaming 20%
Light sleep 15%
Extremely light sleep 25%
Awake 30%
- A1.7 hours
- B2.7 hours
- C3.2 hours
- D3.7 hours
Solution & Step-by-step Explanation
Total duration from 10pm to 6am = 8 hours.
Combined percentage of Light sleep and Extremely light sleep:
Total Percentage=15%+25%=40%
Duration in hours:
Duration=40% of 8 hours=0.40×8=3.2 hours
Combined percentage of Light sleep and Extremely light sleep:
Total Percentage=15%+25%=40%
Duration in hours:
Duration=40% of 8 hours=0.40×8=3.2 hours