Answer:
i Don't know this but other's can help you.
Answer:
60
Step-by-step explanation:
Google "Area of a trapezoid formula" and that will help you with this
Let 
be the amount of food needed for one man for one day. At the beginning, we have enough food for 400 men for 40 days, i.e.
After 10 days, the 400 men will have consumed
food, impliying that the food remaining is
If 200 more men join the garrison, there are now 600 men. Each of them requires food each day, and there are 
units of food remaining. They will last
days.
Answer:
16.
Hope this helps, have a great day/night!
Answer: it should be 60
Step-by-step explanation:
