It says to solve the 9 problems. 3.) Is to build a triangle so that each edge has the same answers facing eachother. It's also says to record letters in your triangle from left to right. And the example of the answer needs to be this Ex answer; ABCDEFGHI. I just want to understand how we put the letter in order or solve it.

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.