Nakhon Custom Shirt Company uses a special fabric in the production of dress shirts. During August, Nakhon Custom Shirt purchased and used 4,100 square yards in the production of 3,700 shirts at a total cost of B2,812,600. (B stands for the Thai baht. There are roughly 30 bahts to a U.S. dollar.) The standard allows one yard at B680 per yard for each shirt.
Calculate the material price variance and the material quantity variance.