New Jersey Valve Company manufactured 7,600 units during January of a control valve used by milk processors in its Camden plant Records indicated the following: Direct labor Direct material purchased Direct material used 46,500 hr. at $14.70 per hr 31,000 lb. at $2.10 per lb. 28,000 lb. The control valve has the following standard prime costs Direct material4 lb. at $2.00 per lb. Direct labor $ 8.00 6 hr. at $15.10 per hr.90.60 $98.60 Standard prime cost per unit