Question 1168159
 At RSM summer camp 100 students had enough food for a 30-days stay.
100*30 = 3000 food days available
 After 2 days 40 new students joined the camp.
 After that 2 weeks passed and half of the students left the camp. How many additional days of food need to be ordered?
:
First 2 days: 100*2 = 200 food days consumed
Next 28 days, if no one leaves: 140 * 28 = 3920 food days required
However, 70 were not there for the last 16 days = 70 * 16 = -1120 food days
We then have 200 + 3920 - 1120 = 3000 food days, they won't have order any