help help help please :) thank you!

Ok now let's start
_ + _ _ _
We gotta get to 260 and it says at least which includes 260
_ + _ ≥ 260
He already has on 20hr employee
20 + _ ≥ 260
He needs 40 hr employees
20 + 40n ≥ 260
so n = 6
20 + 240 ≥ 260 Correct!
And the answer is A