Question 1121735
.
The correct answer and the correct solution is <U>THIS</U> :


<pre>
    the total amount of money the company had to pay = the total number of interviewed people = 200 + 230 - 50 + 40 = 420 dollars.
</pre>

Why ? - Because those 50 were counted twice : once among those 200 people and the second time among 230 people.