Question

hari sleep about 8 hours a day. then what part of a day is it?​

Answer 1

Answer:

=8/24

After cutting numerator and denominator = 1/3

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Answer 2

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 persons 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 / 3 rd part of a week. And, a 60 years old person slept for 20 years.