13. The following materials standards have been established for a particular product: Standard quantity per unit of output Standard price 5.2 meters $15.60 per meter The following data pertain to operations concerning the product for the last month: Actual materials purchased Actual cost of materials purchased ............ Actual materials used in production.. Actual output. 8.500 meters $139,400 8,200 meters 1,640 units Required (15 marks): (1) What is the materials price variance and the materials quantity variance for the month