From the data given below, calculate: (a) Individual material price variance for the two materials, X and Y, assuming that the variances are calculated at the time of purchase; (b) Individual material...

From the data given below, calculate:

(a) Individual material price variance for the two materials, X and Y, assuming that the variances are calculated at the time of purchase;

(b) Individual material usage variances for material X and Y assuming that there was no work-inprogress, either at the commencement or at the end of the period.