Answer:
See notes below
Step-by-step explanation:
Rate variance
The rate variance is the the difference between the standard labor cost of the actual hours paid for and the actual cost.
Possible reasons:
An increase in wage rate
Skilled workers were as against using the unskilled workers planned for
Efficiency variance
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
Possible reasons:
The use of skilled workers who worked faster than the unskilled workers planed for
The workers were trained making them more efficient in saving time