Zeller Company Had Two Products Named Q and R

Zeller Company had two products named Q and R.The firm had the following budget for the period just ended:
Required:
(A) Calculate the contribution margin sales volume variance for Product Q.
(B) Calculate the contribution margin sales volume variance for Product R.
(C) Calculate the sales mix variance for Product Q.
(D) Calculate the sales quantity variance for Product Q.
(E) Calculate the sales mix variance for Product R.
(F) Calculate the sales quantity variance for Product R.