You are managing a project that is scheduled for 30 months of work. The total planned budget is $1500 (in $1,000's). At the end of 13 months, you figured that your company has spent $700 (in $1,000's) on the project. Referring to your Gantt chart, you realize that the company has completed 60% of the project tasks (value). Assuming a linear rate of project expenditure (value adding to project), find the Schedule Variance (in $1,000's). Please show calculations.