Answer:
15 small boxes and 7 large boxes
Explanation:
Lets say the number of large boxes is x. So the number of small boxes is x+8.
So large boxes are total of 20(x) so 20x. This means small= 7(x+8) so 7x+56.
Add them up to get: 20x+7x+56=245, the total.
20x+7x+56=245
27x=189 so x=7
So number of small boxes is 15 and large is 7.