Answer:
B. 13 small bags and 12 large bags
Step-by-step explanation:
This question can be solved using a system of equations.
I am going to say that:
x is the number of small bags.
y is the number of large bags.
The Tuesday morning delivery consists of 25 bags
This means that
, that is 
Bunyan Farm sells 3 pound and 5 pound bags of onions. Total of 99 pounds.
This means that 
Since 







So 13 small bags and 12 large bags.