Help needed. Question about Schedule Variance.

Dear Team,
I am currently studying for the PMP exam and I am struggling to find a solution for this question below: 
Could anyone help me out? Many thanks in advance.
"What is the schedule variance of this project? Total cost is $205,000; After 5 weeks, it is half a week ahead of schedule and the cost is currently $143,000" Answer: $10,250

The Question is not correct.

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Earned Value Management Formulas http://www.pmbypm.com/earned-value-management-formulas/

Earned Value Management System Explained in Easy Language

http://www.pmbypm.com/earned-value-management-system-explained-easy-language/