Find how much 1 box costs by dividing.
9 ÷ 5 = 1.80
Now, multiply 1.80 by 20.
1.80 × 20 = 36
20 boxes of cookies costs $36.
Answer:36$
Step-by-step explanation:So what you have to do is divide 20 by 5 and you get 4.Then multiply 4 by 9 and you answer is 36.
