The standards for one carton of Flavor Rite are:
During the week ended May 17, the following activity took place:
• 4,800 lbs. of raw material were purchased for inventory at a cost of $5.60 per pound;
• 1,200 cartons of finished product were produced;
• 4,020 lbs. of raw material were used;
• 3,110 labor hours were worked at a total cost of $26,435.
Calculate each of the following variances:
(a.) Raw materials purchase price variance.
(b.) Raw materials usage variance.
(c.) Direct labor rate variance.
(d.) Direct labor efficiency variance: