Answer:
a. Direct materials price variance $2,250
b. Direct materials quantity variance - $11,250
c. Total direct materials cost variance - $9,000
Explanation:
a. Direct materials price variance
materials price variance =(AP-SP)×AQ
                     =($3.00-$2.50)× 4,500 pounds
                     = $2,250
b. Direct materials quantity variance
materials quantity variance = (AQ-SQ)× SP
                       = (4,500 pounds - 5,000 pounds)×$2.50
                       = - $11,250
c. Total direct materials cost variance
Total direct materials cost variance=Direct materials price variance+Direct materials quantity variance
                             = $2,250-$11,250
                             = - $9,000