6. The following represents the standard and actual production information for Product NCUBam2018 for the month of August 2018. Standard cost card Details Direct raw materials 20 metres @ $70 each Direct labour 3 hours @ $50 per hour Total S 1,400 150 1.550 Actual results for month are Production 360 units Opening inventories 120 units Closing inventories 200 units Direct raw materials purchased 7,400 metres at a cost of $555,000, and direct wages $57,780 for 1,070 hours. Required: a) b) c) d) Direct raw materials price variance Direct raw materials usage variance Direct raw materials total variance Direct labour rate variance Direct labour efficiency variance Direct labour total variance. f)