QUESTION $6$

After $10$ months, a project's budgeted $($or planned$)$ cost is $$2400.$ The actual cost is $$2000$ and the earned value is $$2100.$ What is the cost variance $($CV$)$ of the

project at this time? $($Enter a positive or negative number without the dollar sign. For example, if the answer is $-$$$123,$ enter $-123.)$