Well this is pretty simple. So the first thought is that the peanut butter would be 10$ and the jam would be 0.20$, however, the peanut butter would not be 10$ more. Instead, subtract the 10$ from the total, which gives you 0.20$, and then divide that by two. Now you have 0.10$ for each, along with another 10$ for the peanut butter. The peanut butter would be $10.10, and the jam would be 0.10$ (that's pretty cheap!).
First, convert 3 tons to ounces. 3 tons = 96,000 ounces. Divide this by 12 ounces. 96,000/12 = 8000 So, 8000 boxes can be filled each week! Hope this helps!!