Answer:
Standard price = $6.40
Actual price = $5.90 ($2,950/500)
Standard quantity = 550
Actual quantity = 500
Direct materials price variance = (Actual price - Standard price) * Actual quantity
= ($5.90 - $6.40) * 500
= $0.5 * 500
= $250 Favorable
Direct materials quantity variance = (Actual quantity - Standard quantity) * Standard price
= (500 - 550) * $6.40
= 50 * $6.40
= $320 Favorable
Total direct materials cost variance = Direct materials price variance + Direct materials quantity variance
= $250 Favorable + $320 Favorable
= $570 Favorable