Answer:
Cost Variance (CV) for the project is negative $77.5
Step-by-step explanation:
The total amount budget for all 3 activities = Activity A worth $200 + Activity B worth $75 + Activity C worth $200 = $475
The total value completed = activities cost x % complete = $200*100% + $75*90% + $200*75% = $417.5
The actual cost till now = $200 + $120 + $175 = $495
The cost variance = The total value completed - The actual cost till now = $417.5 - $495 = ($77.5)