Answer:
5 bags will cost 36.25
Step-by-step explanation:
We can use a proportion to solve. Put the price over the number of bags
21.75 x
---------- = ---------
3 bags 5 bags
Using cross products
21.75 * 5 = 3x
108.75 = 3x
Divide each side by 3
108.75/3 = 3x/3
36.25 =x
5 bags will cost 36.25