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a) Most people sleep about 8 houurs a day then what part of a day in it?
Answers
Answer:
The portion of the brain in the back of the head between the cerebrum and the brain stem. The cerebellum controls balance for walking and standing, and other complex motor functions.
Step-by-step explanation:
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Given,
Sleep duration per day = 8 hours
To find,
The sleep part of a whole year.
The total sleeping time of a 60 years old person in year unit.
Solution,
We know that,
1 week = 7 days = 168 hours
Sleep duration in 1 week = 7×8 = 56 hours
Sleep part of 1 week = 56 hours / 168 hours = 1/3
Now,
1 year = 365 days
Sleep in 1 year = 365 × 8 = 2920 hours
Sleep in 60 years = 2920 × 60 = 175200 hours
Now,
8760 hours = 1 year
1 hour = 1/8760 year
175200 hours = 175200/8760 = 20 years
Hence, a person sleeps 2/3rd part of aweek. And, a 60 years old person sleptfor 20 years.