Answer:
Efficiency variance =$9,860 unfavorable
Step-by-step explanation:
Labour efficiency variance is the difference between the actual time taken to achieve a given production output less the standard hours allowed for same multiplied by the standard labour rate
Hours
11,900 units should have take (11,900× 4hrs) 47,600
but did take 48,180
Difference 580 unfavorable
Standard hours × $17
Efficiency variance $9,860 unfavorable