in the process of calculating the sales variance
there are 2 situations caused by the different of costing method---just as u mentioned above the absorption costing and the marginal costing
while u met the absorption costing ,u can deduce its from the standard cost card,u can check whether if its conclued the fixed overheads.
if the question based on marginal costing ,while u calculate the fixed overheads variance ,u just need to plot out the expenditure variance----that is the budgeted fixed overheads minus the actual fixed overheads! otherwise,u also need to compute out the fixed variance overheads of volume ----that is (the actual voume-standard volume )*standard contribution!!!!