Answer:
a. Determine the standard cost per unit for direct materials and direct labor.
standard direct labor rate = $20 x 30/60 minutes = $10 per faucet
standard direct materials rate = $1.80 x 2.5 lbs = $4.50 per faucet
b. Determine the direct materials price variance, direct materials quantity variance, and total direct materials cost variance.
direct materials price variance = (actual price x actual quantity) - (standard price x actual quantity) = ($1.95 x 13,000) - ($1.80 x 12,500) = $25,350 - $22,500 = $2,850 UNFAVORABLE
direct materials quantity variance = (standard price x actual quantity) -(standard price x standard quantity) = ($1.80 x 13,000) - ($1.80 x 12,500) = $23,400 - $22,500 = $900 UNFAVORABLE
total direct materials variance = direct materials price variance + direct materials quantity variance = $2,850 + $900 = $3,750 UNFAVORABLE