Respuesta :
Answer:
51 and 1/3 hours
Step-by-step explanation:
7 *7 49
1/3*7=7/3=2 1/3 + 49= 51 1/3
ANSWER:
Arlene is getting [tex]51\frac{1}{3}[/tex] hours of sleep in a week.
SOLUTION:
Given, Arlene sleeps for seven hours and 20 minutes each night
We need find how many hours of sleep does she get in a week as a mixed number?
Now, total sleeping time for each night is 7 hours and 20 minutes
Let us convert hours in to minutes first and then in last we can convert it again to hours.
Sleeping time per one night = 7 hours + 20 minutes
= 7 x 60 minutes + 20 minutes
= 420 + 20 minutes
= 440 minutes
Now, sleeping time per one week = sleeping time per one night x 7 nights
= 440 x 7
= 3080 minutes
Now, sleeping time per week in hours = [tex]\frac{3080 \text { minutes }}{60 \text { minutes }}[/tex]
[tex]=\frac{3060+20}{60}[/tex] [20 is remainder]
[tex]\begin{array}{l}{=51+\frac{20}{60}} \\\\ {=51+\frac{1}{3}} \\\\ {=51 \frac{1}{3}}\end{array}[/tex]
Hence Arlene is getting [tex]51\frac{1}{3}[/tex] hours of sleep in a week.
