The number of periods of REM sleep Georgia has in the 6 hours (390 minutes) as stated in the question is 8.667 periods.
Using the standard time conversion, the number of periods is 8 hours.
To determine the number of periods of REM sleep that Georgia has, we need to divide the total number of minutes of sleep by the interval at which she falls into the REM sleep.
From the given information:
The number of periods of REM sleep she has in 390 minutes of sleep is:
= 390 minutes/ 45 minutes
= 8.667 periods.
NOTE: We have only 360 minutes in 6 hours since 60 minutes = 1 hour.
= 360 minutes/ 45 minutes = 8 periods.
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