for the month of march, compute the following variances.

Valport Valve Company manufactured 7,800 units during March of a control valve used by milk processors in its Shreveport plant. Records indicated the following: Direct labor 40,200 hr. at $14.60 Direct material purchased 30,000 lb. at $3.00 22,100 lb. Direct material used The control valve has the following standard prime costs Direct material 3 lb. at $2.90 per lb. 8.70 Direct labor 5 hr. at $15.10 per hr. 75.50 Standard prime cost per unit $84.20