how do you get to 2400 favorable?

Question 11 Barker Company had the following standards for one unit of product: Materials 4 pounds @ $1.50 per pound Direct labor 0.5 hour @ $20.00 per hour The actual usage was as follows: Direct materials $38,152 for 25,100 pounds Direct labor $61.835 for 2,980 hours 6.200 units were produced during the period. What is the labor efficiency variance? Labor efficiency Voronce $2,400 Favorable $2,400 Unfavorable $2.235 Favorable $2.235 Unfavorable