Answer:
I think the answer is 19
Step-by-step explanation:
Divide 309 by 3. You should get 103 (hamburgers). if you multiply that by 2 you will get 206 (cheeseburgers). Add the two together you get the total which was 309 originally.
103 hamburgers and 206 cheeseburgers.
Answer:9/4
Step-by-step explanation:multiply 2.25 by 100 so you get 225/100 and reduce