Subtract the amount used from the total packets:
5000 - 1824 = 3176 left after the first week.
3176 - 2352 = 824 total packets left.
Okay.. well did you try to do it on your own at least ? I help you, but what do you know already so we can go on from there.
If your answer was d) 3.6 , then you are correct!
