ANSWER
200 ounces
Step-by-step explanation
We want to find how much pesticide is need to treat 40 acres.
We are given thta each acre requires 5 ounces.
This means that to find the amount of pesticide needed to treat 40 acres, we multiply 40 acres by 5 ounces.
That is:
40 * 5 = 200 ounces
Therefore, 200 ounces is needed.