Hello,
The answer is "11".
Reason:
10.5=11
If the decimal number is 5 or over you round up one therefore you round up one.
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit
If Chisaka does not space walks, the days she spend spacewalking are equal to zero. Since <span>S represents the number of days Chisaka spacewalks, we just need to replace </span>

in our inequality to find how long her food will last if she does not spacewalks:



From this calculation we can infer that the coefficient of N, 1.3, is the amount of food she needs per day if she doesn't spacewalks. Similarly the coefficient of S, 2.2, is the amount of food she need per day if she spacewalks.
We can conclude that Chisaka will need 1.3 kg of food if she doesn't spacewalks, and 2.2 kg of food if she spacewalks.
Answer:
5 hours
Step-by-step explanation:
3h5min+1h55min=5hours