JIBZ PLC had budgeted sales of 10,000 units for the year 2003. The actual sales were 8000 units with the selling price of $50 which was higher than the budgeted selling price by $5. The budgeted fixed cost was $80000 while the budgeted profit was $20 per unit. Calculate sales volume variance for the year 2003 (Assume marginal costing is used by JIBZ PLC). Although the answer is 56000 adverse. I don’t know-how?