Answer:
Standard material quantity allowed = 270 units × 8 pounds 
 = 2,160
Material Price variance = Actual Quantity (Standard price - Actual price)
 = 2,100 (3.90 - 4.00) 
 = 210 Unfavorable
Material Qty variance = Standard price (Standard quantity - Actual quantity)
 = 3.90 (2,160 - 2,100 ) 
 = 234 Favorable
Total Material Variance: 
= (Standard quantity × Standard price) - (Actual Quantity × Actual price)
= (2,160 × 3.90) - (2,100 × 4) 
= 24 Favorable
Labour rate variance = Actual hours (Standard rate - Actual rate)
 = 1390(14 -13.80 ) 
 = 278 Favorable
Labor efficiency variance = Standard rate (Standard hours-Actual hours)
 = 14 (1350 -1390) 
 = 560 Unfavorable
Total Labour cost variance:
= (Standard hours × Standard rate) - (Actual Hours × Actual rate)
= (1350 × 14) - (1390 × 13.80) 
= 282 Unfavorable