a. Sheridan Creations purchased 8800 feet of copper tubing at a price of $2.60 per foot and used 9000 feet during the period. The standard quantity allowed for the units produced is 9100 and the standard price of the copper tubing is $2.40 per foot. What is Sheridan Creations direct materials quantity variance for the period?

$240 favorable

$480 favorable

$720 favorable

$240 unfavorable

b. Sheridan Manufacturing Company purchased 15400 switches to make 6700 units. The standard allows for 2 switches per unit. The company actually used 15900 to produce the 6700 units. Sheridan budgeted $0.76 per switch but had to pay $0.81 per switch. What is Sheridans direct materials price variance for the period?

$795 unfavorable

$770 unfavorable

$670 unfavorable

$535 unfavorable

c. Assembly line workers at Sheridan Manufacturing worked a total of 10000 direct labor hours to produce 38800 units. The standard for producing one unit is15 minutes at a wage rate of $11.20. If the actual wage rate was $10.7 per direct labor hour, Sheridans direct labor efficiency variance is

$3210 favorable.

$2000 favorable.

$3360 unfavorable.

$4850 unfavorable.